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Feature Request

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  • Carl
    Would it be possible to have a feature where you select two vertices (with z values set), and GM auto linear interpolates the connected vertices between them
    Message 1 of 22 , Mar 28, 2012
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      Would it be possible to have a feature where you select two vertices (with z values set), and GM auto linear interpolates the connected vertices between them and assigns the z values? It would be really useful to be able to use rivers to generate valleys/ height info in this way, for gridding. I know it's possible to transfer z info from a dem to vectors, but often my terrain doesn't have the valley info in there.

      Thanks,
      Carl
    • Carl
      Please can we have a create river line feature in Global Mapper. A line with a dialog which opens on start asking for: Start and end heights An elevation
      Message 2 of 22 , Jul 15, 2013
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        Please can we have a create river line feature in Global Mapper.
        A line with a dialog which opens on start asking for:
        Start and end heights
        An elevation interpolation function to use (linear, exponential, etc).
        Start and end widths for river valley (or flood plain) cross section.

        Global mapper would interpolate along the line length and assign heights to each vertex, and also interpolate the cross section width along its length.

        Perhaps the feature would comprise of a polyline for the channel centre line + an area feature to describe the cross section. Or perhaps have something like the buffer dialog which could be applied to any line- including the elevation interpolation.

        This could then be used as a breakline to affect gridding.



        Carl
      • Mike Childs
        Hello Carl, I m not quite clear on how this would work. Do you already have the stream channel and want to create an area features from it based on the
        Message 3 of 22 , Jul 15, 2013
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          Hello Carl,

          I'm not quite clear on how this would work. Do you already have the stream channel and want to create an area features from it based on the surrounding terrain and the base height of the stream at each location? Or are you wanting to create an elevation grid from some 3D vector data (like contours) and want to use stream vectors to constrain it so the resulting terrain is hydrologically correct? This is actually already possible in the latest v14.2 release if you grid vector layers with both contours lines and stream line features.

          Thanks,

          Mike Childs
          Global Mapper Guru
          Blue Marble Geographics
          Parker, CO USA
          www.bluemarblegeo.com
          Email: geohelp@...

          Global Mapper 14.2 Now Available!
          Many New Scripting Options, LiDAR Features and Much More

          As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
          The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
          ----------------------- Original Message -----------------------

          From: "Carl" <carllingard@...>
          To: global_mapper@yahoogroups.com
          Cc:
          Date: Mon, 15 Jul 2013 23:54:39 -0000
          Subject: [global_mapper] Feature Request


          Please can we have a create river line feature in Global Mapper.
          A line with a dialog which opens on start asking for:
          Start and end heights
          An elevation interpolation function to use (linear, exponential, etc).
          Start and end widths for river valley (or flood plain) cross section.

          Global mapper would interpolate along the line length and assign heights to each vertex, and also interpolate the cross section width along its length.

          Perhaps the feature would comprise of a polyline for the channel centre line + an area feature to describe the cross section. Or perhaps have something like the buffer dialog which could be applied to any line- including the elevation interpolation.

          This could then be used as a breakline to affect gridding.

          Carl
        • Carl Lingard
           The second option you mentioned. I have the stream channel. BUT, I have no elevation info in the stream channel or necessarily any contours in the vacinity.
          Message 4 of 22 , Jul 16, 2013
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             The second option you mentioned. I have the stream channel. BUT, I have no elevation info in the stream channel or necessarily any contours in the vacinity. The option to interpolate elevation from end points and assign them to the vertices would be a quick way to create the gradient. When gridded the 3D vectors would create the feature.

             I guess you could describe the line I want to create more generally as a gradient. It could be used to create other features for eg road cuttings- a road would simply have a fixed cross section- without having to assign elevation per vertex myself.
            A stream would be a gradient with variable cross section. Simple interpolation of cross section from begin and end widths would be fine.

            Carl



            ________________________________
            From: Mike Childs <geohelp@...>
            To: Yiannis Magkiriadis <global_mapper@yahoogroups.com>
            Sent: Tuesday, 16 July 2013, 5:43
            Subject: re: [global_mapper] Feature Request


            Hello Carl,

            I'm not quite clear on how this would work. Do you already have the stream channel and want to create an area features from it based on the surrounding terrain and the base height of the stream at each location? Or are you wanting to create an elevation grid from some 3D vector data (like contours) and want to use stream vectors to constrain it so the resulting terrain is hydrologically correct? This is actually already possible in the latest v14.2 release if you grid vector layers with both contours lines and stream line features.

            Thanks,

            Mike Childs
            Global Mapper Guru
            Blue Marble Geographics
            Parker, CO USA
            www.bluemarblegeo.com
            Email: geohelp@...

            Global Mapper 14.2 Now Available!
            Many New Scripting Options, LiDAR Features and Much More

            As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
            The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
            ----------------------- Original Message -----------------------

            From: "Carl" <carllingard@...>
            To: global_mapper@yahoogroups.com
            Cc:
            Date: Mon, 15 Jul 2013 23:54:39 -0000
            Subject: [global_mapper] Feature Request


            Please can we have a create river line feature in Global Mapper.
            A line with a dialog which opens on start asking for:
            Start and end heights
            An elevation interpolation function to use (linear, exponential, etc).
            Start and end widths for river valley (or flood plain) cross section.

            Global mapper would interpolate along the line length and assign heights to each vertex, and also interpolate the cross section width along its length.

            Perhaps the feature would comprise of a polyline for the channel centre line + an area feature to describe the cross section. Or perhaps have something like the buffer dialog which could be applied to any line- including the elevation interpolation.

            This could then be used as a breakline to affect gridding.

            Carl






            ------------------------------------

            Yahoo! Groups Links



            [Non-text portions of this message have been removed]
          • Mike Childs
            Hello Carl, Ah this you can already do. Just select your stream line with the Feature Info Tool, then press Vertices to show the vertex list. Press the button
            Message 5 of 22 , Jul 16, 2013
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              Hello Carl,

              Ah this you can already do. Just select your stream line with the Feature Info Tool, then press Vertices to show the vertex list. Press the button to add elevations and enter the bottom elevation. Then select the start point and press Edit Elevation and enter the start elevation. Finally right-click on the vertex list and select to evenly spread elevations between the first and last value. You should then get evenly spread Z values along the stream line that will be used during grid generation. Of course this is only accurate if your stream line has a smooth gradient and no parts that are steeper than others.

              Thanks,

              Mike Childs
              Global Mapper Guru
              Blue Marble Geographics
              Parker, CO USA
              www.bluemarblegeo.com
              Email: geohelp@...

              Global Mapper 14.2 Now Available!
              Many New Scripting Options, LiDAR Features and Much More

              As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
              The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
              ----------------------- Original Message -----------------------

              From: Carl Lingard <carllingard@...>
              To: "global_mapper@yahoogroups.com" <global_mapper@yahoogroups.com>
              Cc:
              Date: Tue, 16 Jul 2013 09:03:15 +0100 (BST)
              Subject: Re: [global_mapper] Feature Request


              The second option you mentioned. I have the stream channel. BUT, I have no elevation info in the stream channel or necessarily any contours in the vacinity. The option to interpolate elevation from end points and assign them to the vertices would be a quick way to create the gradient. When gridded the 3D vectors would create the feature.

              I guess you could describe the line I want to create more generally as a gradient. It could be used to create other features for eg road cuttings- a road would simply have a fixed cross section- without having to assign elevation per vertex myself.
              A stream would be a gradient with variable cross section. Simple interpolation of cross section from begin and end widths would be fine.

              Carl

              ________________________________
              From: Mike Childs <geohelp@...>
              To: Yiannis Magkiriadis <global_mapper@yahoogroups.com>
              Sent: Tuesday, 16 July 2013, 5:43
              Subject: re: [global_mapper] Feature Request


              Hello Carl,

              I'm not quite clear on how this would work. Do you already have the stream channel and want to create an area features from it based on the surrounding terrain and the base height of the stream at each location? Or are you wanting to create an elevation grid from some 3D vector data (like contours) and want to use stream vectors to constrain it so the resulting terrain is hydrologically correct? This is actually already possible in the latest v14.2 release if you grid vector layers with both contours lines and stream line features.

              Thanks,

              Mike Childs
              Global Mapper Guru
              Blue Marble Geographics
              Parker, CO USA
              www.bluemarblegeo.com
              Email: geohelp@...

              Global Mapper 14.2 Now Available!
              Many New Scripting Options, LiDAR Features and Much More

              As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
              The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
              ----------------------- Original Message -----------------------

              From: "Carl" <carllingard@...>
              To: global_mapper@yahoogroups.com
              Cc:
              Date: Mon, 15 Jul 2013 23:54:39 -0000
              Subject: [global_mapper] Feature Request

              Please can we have a create river line feature in Global Mapper.
              A line with a dialog which opens on start asking for:
              Start and end heights
              An elevation interpolation function to use (linear, exponential, etc).
              Start and end widths for river valley (or flood plain) cross section.

              Global mapper would interpolate along the line length and assign heights to each vertex, and also interpolate the cross section width along its length.

              Perhaps the feature would comprise of a polyline for the channel centre line + an area feature to describe the cross section. Or perhaps have something like the buffer dialog which could be applied to any line- including the elevation interpolation.

              This could then be used as a breakline to affect gridding.

              Carl

              ------------------------------------

              Yahoo! Groups Links

              [Non-text portions of this message have been removed]
            • Carl Lingard
              Hi Mike, that s good to know, and half of the problem solved. Is there no way to do the same with altering the cross section influence of the line? Since we
              Message 6 of 22 , Jul 16, 2013
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                Hi Mike, that's good to know, and half of the problem solved. Is there no way to do the same with altering the cross section influence of the line? Since we can already buffer a line couldn't the feature be added to the buffer dialog?

                Carl




                ________________________________
                From: Mike Childs <geohelp@...>
                To: Yiannis Magkiriadis <global_mapper@yahoogroups.com>
                Sent: Tuesday, 16 July 2013, 16:14
                Subject: re[2]: [global_mapper] Feature Request


                Hello Carl,

                Ah this you can already do. Just select your stream line with the Feature Info Tool, then press Vertices to show the vertex list. Press the button to add elevations and enter the bottom elevation. Then select the start point and press Edit Elevation and enter the start elevation. Finally right-click on the vertex list and select to evenly spread elevations between the first and last value. You should then get evenly spread Z values along the stream line that will be used during grid generation. Of course this is only accurate if your stream line has a smooth gradient and no parts that are steeper than others.

                Thanks,

                Mike Childs
                Global Mapper Guru
                Blue Marble Geographics
                Parker, CO USA
                www.bluemarblegeo.com
                Email: geohelp@...

                Global Mapper 14.2 Now Available!
                Many New Scripting Options, LiDAR Features and Much More

                As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
                The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
                ----------------------- Original Message -----------------------

                From: Carl Lingard <carllingard@...>
                To: "global_mapper@yahoogroups.com" <global_mapper@yahoogroups.com>
                Cc:
                Date: Tue, 16 Jul 2013 09:03:15 +0100 (BST)
                Subject: Re: [global_mapper] Feature Request


                The second option you mentioned. I have the stream channel. BUT, I have no elevation info in the stream channel or necessarily any contours in the vacinity. The option to interpolate elevation from end points and assign them to the vertices would be a quick way to create the gradient. When gridded the 3D vectors would create the feature.

                I guess you could describe the line I want to create more generally as a gradient. It could be used to create other features for eg road cuttings- a road would simply have a fixed cross section- without having to assign elevation per vertex myself.
                A stream would be a gradient with variable cross section. Simple interpolation of cross section from begin and end widths would be fine.

                Carl

                ________________________________
                From: Mike Childs <geohelp@...>
                To: Yiannis Magkiriadis <global_mapper@yahoogroups.com>
                Sent: Tuesday, 16 July 2013, 5:43
                Subject: re: [global_mapper] Feature Request


                Hello Carl,

                I'm not quite clear on how this would work. Do you already have the stream channel and want to create an area features from it based on the surrounding terrain and the base height of the stream at each location? Or are you wanting to create an elevation grid from some 3D vector data (like contours) and want to use stream vectors to constrain it so the resulting terrain is hydrologically correct? This is actually already possible in the latest v14.2 release if you grid vector layers with both contours lines and stream line features.

                Thanks,

                Mike Childs
                Global Mapper Guru
                Blue Marble Geographics
                Parker, CO USA
                www.bluemarblegeo.com
                Email: geohelp@...

                Global Mapper 14.2 Now Available!
                Many New Scripting Options, LiDAR Features and Much More

                As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
                The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
                ----------------------- Original Message -----------------------

                From: "Carl" <carllingard@...>
                To: global_mapper@yahoogroups.com
                Cc:
                Date: Mon, 15 Jul 2013 23:54:39 -0000
                Subject: [global_mapper] Feature Request

                Please can we have a create river line feature in Global Mapper.
                A line with a dialog which opens on start asking for:
                Start and end heights
                An elevation interpolation function to use (linear, exponential, etc).
                Start and end widths for river valley (or flood plain) cross section.

                Global mapper would interpolate along the line length and assign heights to each vertex, and also interpolate the cross section width along its length.

                Perhaps the feature would comprise of a polyline for the channel centre line + an area feature to describe the cross section. Or perhaps have something like the buffer dialog which could be applied to any line- including the elevation interpolation.

                This could then be used as a breakline to affect gridding.

                Carl

                ------------------------------------

                Yahoo! Groups Links

                [Non-text portions of this message have been removed]






                ------------------------------------

                Yahoo! Groups Links



                [Non-text portions of this message have been removed]
              • Mike Childs
                Hello Carl, If you first create the stream as a 3D line, you can then buffer that and the buffered area result will also be 3D with the elevation of each
                Message 7 of 22 , Jul 16, 2013
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                  Hello Carl,

                  If you first create the stream as a 3D line, you can then buffer that and the buffered area result will also be 3D with the elevation of each vertex coming from the elevation of the closest point on the original line.

                  Thanks,

                  Mike Childs
                  Global Mapper Guru
                  Blue Marble Geographics
                  Parker, CO USA
                  www.bluemarblegeo.com
                  Email: geohelp@...

                  Global Mapper 14.2 Now Available!
                  Many New Scripting Options, LiDAR Features and Much More

                  As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
                  The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
                  ----------------------- Original Message -----------------------

                  From: Carl Lingard <carllingard@...>
                  To: "global_mapper@yahoogroups.com" <global_mapper@yahoogroups.com>
                  Cc:
                  Date: Tue, 16 Jul 2013 17:10:12 +0100 (BST)
                  Subject: Re: re[2]: [global_mapper] Feature Request


                  Hi Mike, that's good to know, and half of the problem solved. Is there no way to do the same with altering the cross section influence of the line? Since we can already buffer a line couldn't the feature be added to the buffer dialog?

                  Carl

                  ________________________________
                  From: Mike Childs <geohelp@...>
                  To: Yiannis Magkiriadis <global_mapper@yahoogroups.com>
                  Sent: Tuesday, 16 July 2013, 16:14
                  Subject: re[2]: [global_mapper] Feature Request


                  Hello Carl,

                  Ah this you can already do. Just select your stream line with the Feature Info Tool, then press Vertices to show the vertex list. Press the button to add elevations and enter the bottom elevation. Then select the start point and press Edit Elevation and enter the start elevation. Finally right-click on the vertex list and select to evenly spread elevations between the first and last value. You should then get evenly spread Z values along the stream line that will be used during grid generation. Of course this is only accurate if your stream line has a smooth gradient and no parts that are steeper than others.

                  Thanks,

                  Mike Childs
                  Global Mapper Guru
                  Blue Marble Geographics
                  Parker, CO USA
                  www.bluemarblegeo.com
                  Email: geohelp@...

                  Global Mapper 14.2 Now Available!
                  Many New Scripting Options, LiDAR Features and Much More

                  As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
                  The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
                  ----------------------- Original Message -----------------------

                  From: Carl Lingard <carllingard@...>
                  To: "global_mapper@yahoogroups.com" <global_mapper@yahoogroups.com>
                  Cc:
                  Date: Tue, 16 Jul 2013 09:03:15 +0100 (BST)
                  Subject: Re: [global_mapper] Feature Request

                  The second option you mentioned. I have the stream channel. BUT, I have no elevation info in the stream channel or necessarily any contours in the vacinity. The option to interpolate elevation from end points and assign them to the vertices would be a quick way to create the gradient. When gridded the 3D vectors would create the feature.

                  I guess you could describe the line I want to create more generally as a gradient. It could be used to create other features for eg road cuttings- a road would simply have a fixed cross section- without having to assign elevation per vertex myself.
                  A stream would be a gradient with variable cross section. Simple interpolation of cross section from begin and end widths would be fine.

                  Carl

                  ________________________________
                  From: Mike Childs <geohelp@...>
                  To: Yiannis Magkiriadis <global_mapper@yahoogroups.com>
                  Sent: Tuesday, 16 July 2013, 5:43
                  Subject: re: [global_mapper] Feature Request

                  Hello Carl,

                  I'm not quite clear on how this would work. Do you already have the stream channel and want to create an area features from it based on the surrounding terrain and the base height of the stream at each location? Or are you wanting to create an elevation grid from some 3D vector data (like contours) and want to use stream vectors to constrain it so the resulting terrain is hydrologically correct? This is actually already possible in the latest v14.2 release if you grid vector layers with both contours lines and stream line features.

                  Thanks,

                  Mike Childs
                  Global Mapper Guru
                  Blue Marble Geographics
                  Parker, CO USA
                  www.bluemarblegeo.com
                  Email: geohelp@...

                  Global Mapper 14.2 Now Available!
                  Many New Scripting Options, LiDAR Features and Much More

                  As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
                  The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
                  ----------------------- Original Message -----------------------

                  From: "Carl" <carllingard@...>
                  To: global_mapper@yahoogroups.com
                  Cc:
                  Date: Mon, 15 Jul 2013 23:54:39 -0000
                  Subject: [global_mapper] Feature Request

                  Please can we have a create river line feature in Global Mapper.
                  A line with a dialog which opens on start asking for:
                  Start and end heights
                  An elevation interpolation function to use (linear, exponential, etc).
                  Start and end widths for river valley (or flood plain) cross section.

                  Global mapper would interpolate along the line length and assign heights to each vertex, and also interpolate the cross section width along its length.

                  Perhaps the feature would comprise of a polyline for the channel centre line + an area feature to describe the cross section. Or perhaps have something like the buffer dialog which could be applied to any line- including the elevation interpolation.

                  This could then be used as a breakline to affect gridding.

                  Carl

                  ------------------------------------

                  Yahoo! Groups Links

                  [Non-text portions of this message have been removed]

                  ------------------------------------

                  Yahoo! Groups Links

                  [Non-text portions of this message have been removed]
                • Carl Lingard
                  I tried a few things out as you suggested. I created a stream channel with interpolated z info. Then a buffer around it and it did work, except that it doesn t
                  Message 8 of 22 , Jul 16, 2013
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                    I tried a few things out as you suggested. I created a stream channel with interpolated z info. Then a buffer around it and it did work, except that it doesn't allow you to taper the cross section along the LINE LENGTH- that's what I mean. So for example the buffer would taper off as a river valley would become narrower upstream. I can see that you could create the narrowing manually by moving vertices of the buffer, but if the original line was a traced line that's a lot of vertices to move, and it's really awkward.
                     Would it be possible to have a setting in buffer creation to either automatically interpolate from start and end widths provided by the user in the dialog directly as two numbers?, or maybe the option to assign the buffer width to another area feature already drawn, -"Get distance from Feature"?

                    Carl



                    ________________________________
                    From: Mike Childs <geohelp@...>
                    To: Yiannis Magkiriadis <global_mapper@yahoogroups.com>
                    Sent: Tuesday, 16 July 2013, 17:37
                    Subject: re[4]: [global_mapper] Feature Request


                    Hello Carl,

                    If you first create the stream as a 3D line, you can then buffer that and the buffered area result will also be 3D with the elevation of each vertex coming from the elevation of the closest point on the original line.

                    Thanks,

                    Mike Childs
                    Global Mapper Guru
                    Blue Marble Geographics
                    Parker, CO USA
                    www.bluemarblegeo.com
                    Email: geohelp@...

                    Global Mapper 14.2 Now Available!
                    Many New Scripting Options, LiDAR Features and Much More

                    As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
                    The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
                    ----------------------- Original Message -----------------------

                    From: Carl Lingard <carllingard@...>
                    To: "global_mapper@yahoogroups.com" <global_mapper@yahoogroups.com>
                    Cc:
                    Date: Tue, 16 Jul 2013 17:10:12 +0100 (BST)
                    Subject: Re: re[2]: [global_mapper] Feature Request


                    Hi Mike, that's good to know, and half of the problem solved. Is there no way to do the same with altering the cross section influence of the line? Since we can already buffer a line couldn't the feature be added to the buffer dialog?

                    Carl

                    ________________________________
                    From: Mike Childs <geohelp@...>
                    To: Yiannis Magkiriadis <global_mapper@yahoogroups.com>
                    Sent: Tuesday, 16 July 2013, 16:14
                    Subject: re[2]: [global_mapper] Feature Request


                    Hello Carl,

                    Ah this you can already do. Just select your stream line with the Feature Info Tool, then press Vertices to show the vertex list. Press the button to add elevations and enter the bottom elevation. Then select the start point and press Edit Elevation and enter the start elevation. Finally right-click on the vertex list and select to evenly spread elevations between the first and last value. You should then get evenly spread Z values along the stream line that will be used during grid generation. Of course this is only accurate if your stream line has a smooth gradient and no parts that are steeper than others.

                    Thanks,

                    Mike Childs
                    Global Mapper Guru
                    Blue Marble Geographics
                    Parker, CO USA
                    www.bluemarblegeo.com
                    Email: geohelp@...

                    Global Mapper 14.2 Now Available!
                    Many New Scripting Options, LiDAR Features and Much More

                    As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
                    The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
                    ----------------------- Original Message -----------------------

                    From: Carl Lingard <carllingard@...>
                    To: "global_mapper@yahoogroups.com" <global_mapper@yahoogroups.com>
                    Cc:
                    Date: Tue, 16 Jul 2013 09:03:15 +0100 (BST)
                    Subject: Re: [global_mapper] Feature Request

                    The second option you mentioned. I have the stream channel. BUT, I have no elevation info in the stream channel or necessarily any contours in the vacinity. The option to interpolate elevation from end points and assign them to the vertices would be a quick way to create the gradient. When gridded the 3D vectors would create the feature.

                    I guess you could describe the line I want to create more generally as a gradient. It could be used to create other features for eg road cuttings- a road would simply have a fixed cross section- without having to assign elevation per vertex myself.
                    A stream would be a gradient with variable cross section. Simple interpolation of cross section from begin and end widths would be fine.

                    Carl

                    ________________________________
                    From: Mike Childs <geohelp@...>
                    To: Yiannis Magkiriadis <global_mapper@yahoogroups.com>
                    Sent: Tuesday, 16 July 2013, 5:43
                    Subject: re: [global_mapper] Feature Request

                    Hello Carl,

                    I'm not quite clear on how this would work. Do you already have the stream channel and want to create an area features from it based on the surrounding terrain and the base height of the stream at each location? Or are you wanting to create an elevation grid from some 3D vector data (like contours) and want to use stream vectors to constrain it so the resulting terrain is hydrologically correct? This is actually already possible in the latest v14.2 release if you grid vector layers with both contours lines and stream line features.

                    Thanks,

                    Mike Childs
                    Global Mapper Guru
                    Blue Marble Geographics
                    Parker, CO USA
                    www.bluemarblegeo.com
                    Email: geohelp@...

                    Global Mapper 14.2 Now Available!
                    Many New Scripting Options, LiDAR Features and Much More

                    As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
                    The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
                    ----------------------- Original Message -----------------------

                    From: "Carl" <carllingard@...>
                    To: global_mapper@yahoogroups.com
                    Cc:
                    Date: Mon, 15 Jul 2013 23:54:39 -0000
                    Subject: [global_mapper] Feature Request

                    Please can we have a create river line feature in Global Mapper.
                    A line with a dialog which opens on start asking for:
                    Start and end heights
                    An elevation interpolation function to use (linear, exponential, etc).
                    Start and end widths for river valley (or flood plain) cross section.

                    Global mapper would interpolate along the line length and assign heights to each vertex, and also interpolate the cross section width along its length.

                    Perhaps the feature would comprise of a polyline for the channel centre line + an area feature to describe the cross section. Or perhaps have something like the buffer dialog which could be applied to any line- including the elevation interpolation.

                    This could then be used as a breakline to affect gridding.

                    Carl

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                  • Global Mapper
                    Carl, I actually think it would be pretty easy to update our existing buffer technology to support different start and end buffer distances for line features.
                    Message 9 of 22 , Jul 17, 2013
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                      Carl,

                      I actually think it would be pretty easy to update our existing buffer technology to support different start and end buffer distances for line features. I have added this to our todo list as item #12023. It will likely be in the next release, which would be v15.0 in September.

                      Thanks,

                      Mike
                      Global Mapper Guru
                      geohelp@...
                      http://www.bluemarblegeo.com/
                    • Carl Lingard
                      Thanks Mike, that will really round the tool off nicely! Carl ________________________________ From: Global Mapper To:
                      Message 10 of 22 , Jul 17, 2013
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                        Thanks Mike, that will really round the tool off nicely!

                        Carl




                        ________________________________
                        From: Global Mapper <geohelp@...>
                        To: global_mapper@yahoogroups.com
                        Sent: Wednesday, 17 July 2013, 18:26
                        Subject: Re: [global_mapper] Feature Request



                         
                        Carl,

                        I actually think it would be pretty easy to update our existing buffer technology to support different start and end buffer distances for line features. I have added this to our todo list as item #12023. It will likely be in the next release, which would be v15.0 in September.

                        Thanks,

                        Mike
                        Global Mapper Guru
                        geohelp@...
                        http://www.bluemarblegeo.com/




                        [Non-text portions of this message have been removed]
                      • Yiannis Magkiriadis
                        Hi Mike and Carl I have been following this discussion with regards to your last comment: *I actually think it would be pretty easy to update our existing
                        Message 11 of 22 , Jul 18, 2013
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                          Hi Mike and Carl

                          I have been following this discussion with regards to your last comment:

                          *I actually think it would be pretty easy to update our existing buffer
                          technology to support different start and end buffer distances for line
                          features. I have added this to our todo list as item #12023. It will likely
                          be in the next release, which would be v15.0 in September.*
                          *
                          *
                          and correct me if I am wrong but we could use the same tool to modify the
                          buffer width along a line at different distances?

                          i.e. I have a line that is 50 km long and we want to create a buffer zone
                          along the 1st 10km of say 25m, then I want the buffer zone to be 100m
                          between 10km and 40km and then I want the buffer zone to go to 65m for the
                          final 10km.

                          the thing is as of know, I have to split the line in 3x differnt segments
                          and create the relevant buffer zones of the 3 lines individually and then
                          join the lines up again.

                          thanks for nursing GM for us.

                          y





                          On Wed, Jul 17, 2013 at 6:48 PM, Carl Lingard <carllingard@...> wrote:

                          > **
                          >
                          >
                          > Thanks Mike, that will really round the tool off nicely!
                          >
                          > Carl
                          >
                          > ________________________________
                          > From: Global Mapper <geohelp@...>
                          > To: global_mapper@yahoogroups.com
                          > Sent: Wednesday, 17 July 2013, 18:26
                          > Subject: Re: [global_mapper] Feature Request
                          >
                          >
                          >
                          >
                          > Carl,
                          >
                          > I actually think it would be pretty easy to update our existing buffer
                          > technology to support different start and end buffer distances for line
                          > features. I have added this to our todo list as item #12023. It will likely
                          > be in the next release, which would be v15.0 in September.
                          >
                          > Thanks,
                          >
                          > Mike
                          > Global Mapper Guru
                          > geohelp@...
                          > http://www.bluemarblegeo.com/
                          >
                          > [Non-text portions of this message have been removed]
                          >
                          >
                          >


                          [Non-text portions of this message have been removed]
                        • Carl Lingard
                          Hi Yiannis, yes, all I m looking for is a simple interpolation from the start width to the end width. So the change would be gradual. Any other interpolation
                          Message 12 of 22 , Jul 18, 2013
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                            Hi Yiannis, yes, all I'm looking for is a simple interpolation from the start width to the end width. So the change would be gradual. Any other interpolation functions of course would be useful- maybe something like the taper functionality. I think you're looking for more of a stepped buffer. Maybe a kind of a staircase function, but sounds like you possibly need more control than that.
                             Perhaps the ability for the input to accept a list of widths, eg input as "25, 100, 65". Global Mapper would map those to the the first 3 line segments it encountered in the list- if it encountered a comma in the input it would auto step them and not interpolate. The mind boggles..!

                            Carl



                            ________________________________
                            From: Yiannis Magkiriadis <yiannis.m@...>
                            To: global_mapper@yahoogroups.com
                            Sent: Thursday, 18 July 2013, 9:14
                            Subject: Re: [global_mapper] Feature Request


                            Hi Mike and Carl

                            I have been following this discussion with regards to your last comment:

                            *I actually think it would be pretty easy to update our existing buffer
                            technology to support different start and end buffer distances for line
                            features. I have added this to our todo list as item #12023. It will likely
                            be in the next release, which would be v15.0 in September.*
                            *
                            *
                            and correct me if I am wrong but we could use the same tool to modify the
                            buffer width along a line at different distances?

                            i.e. I have a line that is 50 km long and we want to create a buffer zone
                            along the 1st 10km of say 25m, then I want the buffer zone to be 100m
                            between 10km and 40km and then I want the buffer zone to go to 65m for the
                            final 10km.

                            the thing is as of know, I have to split the line in 3x differnt segments
                            and create the relevant buffer zones of the 3 lines individually and then
                            join the lines up again.

                            thanks for nursing GM for us.

                            y





                            On Wed, Jul 17, 2013 at 6:48 PM, Carl Lingard <carllingard@...> wrote:

                            > **
                            >
                            >
                            > Thanks Mike, that will really round the tool off nicely!
                            >
                            > Carl
                            >
                            > ________________________________
                            > From: Global Mapper <geohelp@...>
                            > To: global_mapper@yahoogroups.com
                            > Sent: Wednesday, 17 July 2013, 18:26
                            > Subject: Re: [global_mapper] Feature Request
                            >
                            >
                            >
                            >
                            > Carl,
                            >
                            > I actually think it would be pretty easy to update our existing buffer
                            > technology to support different start and end buffer distances for line
                            > features. I have added this to our todo list as item #12023. It will likely
                            > be in the next release, which would be v15.0 in September.
                            >
                            > Thanks,
                            >
                            > Mike
                            > Global Mapper Guru
                            > geohelp@...
                            > http://www.bluemarblegeo.com/
                            >
                            > [Non-text portions of this message have been removed]
                            >

                            >


                            [Non-text portions of this message have been removed]



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                          • Mike Childs
                            Hello Carl, I think at least initially there would just be a start and end width and if you needed different sizes you would just need to split the line at the
                            Message 13 of 22 , Jul 18, 2013
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                              Hello Carl,

                              I think at least initially there would just be a start and end width and if you needed different sizes you would just need to split the line at the vertices before buffering it. The interface would be a lot more complex if you start worrying about different widths at different vertices.

                              Thanks,

                              Mike Childs
                              Global Mapper Guru
                              Blue Marble Geographics
                              Parker, CO USA
                              www.bluemarblegeo.com
                              Email: geohelp@...

                              Global Mapper 14.2 Now Available!
                              Many New Scripting Options, LiDAR Features and Much More

                              As always, keep an eye on www.bluemarblegeo.com for more information on Blue Marble Geographics.
                              The information in this E-mail message is legally privileged and confidential information intended only for the use of the individual(s) named above. If you, the reader of this message, are not the intended recipient, you are hereby notified that you should not further disseminate, distribute, or forward this E-mail message. If you have received this E-mail in error, please notify the sender and delete all copies of the message promptly. Thank you.
                              ----------------------- Original Message -----------------------

                              From: Carl Lingard <carllingard@...>
                              To: "global_mapper@yahoogroups.com" <global_mapper@yahoogroups.com>
                              Cc:
                              Date: Thu, 18 Jul 2013 11:20:17 +0100 (BST)
                              Subject: Re: [global_mapper] Feature Request


                              Hi Yiannis, yes, all I'm looking for is a simple interpolation from the start width to the end width. So the change would be gradual. Any other interpolation functions of course would be useful- maybe something like the taper functionality. I think you're looking for more of a stepped buffer. Maybe a kind of a staircase function, but sounds like you possibly need more control than that.
                              Perhaps the ability for the input to accept a list of widths, eg input as "25, 100, 65". Global Mapper would map those to the the first 3 line segments it encountered in the list- if it encountered a comma in the input it would auto step them and not interpolate. The mind boggles..!

                              Carl

                              ________________________________
                              From: Yiannis Magkiriadis <yiannis.m@...>
                              To: global_mapper@yahoogroups.com
                              Sent: Thursday, 18 July 2013, 9:14
                              Subject: Re: [global_mapper] Feature Request


                              Hi Mike and Carl

                              I have been following this discussion with regards to your last comment:

                              *I actually think it would be pretty easy to update our existing buffer
                              technology to support different start and end buffer distances for line
                              features. I have added this to our todo list as item #12023. It will likely
                              be in the next release, which would be v15.0 in September.*
                              *
                              *
                              and correct me if I am wrong but we could use the same tool to modify the
                              buffer width along a line at different distances?

                              i.e. I have a line that is 50 km long and we want to create a buffer zone
                              along the 1st 10km of say 25m, then I want the buffer zone to be 100m
                              between 10km and 40km and then I want the buffer zone to go to 65m for the
                              final 10km.

                              the thing is as of know, I have to split the line in 3x differnt segments
                              and create the relevant buffer zones of the 3 lines individually and then
                              join the lines up again.

                              thanks for nursing GM for us.

                              y

                              On Wed, Jul 17, 2013 at 6:48 PM, Carl Lingard <carllingard@...> wrote:

                              > **
                              >
                              >
                              > Thanks Mike, that will really round the tool off nicely!
                              >
                              > Carl
                              >
                              > ________________________________
                              > From: Global Mapper <geohelp@...>
                              > To: global_mapper@yahoogroups.com
                              > Sent: Wednesday, 17 July 2013, 18:26
                              > Subject: Re: [global_mapper] Feature Request
                              >
                              >
                              >
                              >
                              > Carl,
                              >
                              > I actually think it would be pretty easy to update our existing buffer
                              > technology to support different start and end buffer distances for line
                              > features. I have added this to our todo list as item #12023. It will likely
                              > be in the next release, which would be v15.0 in September.
                              >
                              > Thanks,
                              >
                              > Mike
                              > Global Mapper Guru
                              > geohelp@...
                              > http://www.bluemarblegeo.com/
                              >
                              > [Non-text portions of this message have been removed]
                              >
                              >
                              >

                              [Non-text portions of this message have been removed]

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