My apologies, Bob - I must have not formulated my derivation in an effective manner. So for the moment forget the logarithms, prominence density, or fractal...
I did the calculation at http://en.wikipedia.org/wiki/Talk:Huascar%C3%A1n I cannot be certain that it is error free. You are welcome to check it. Jonathan ... ...
Hi, I had a quick look at Adam's proposal, here is how it works out for me as of today: Oct. 1. 2008: World 50 1.950007553, 0.433 done (20/50 = 0.40...
... I believe that for fractal terrain, alpha=2. The prominence CDF for fractal terrain goes as p^-2, and the PDF goes as p^-3. Edward "7.389056099" Earl ...
... I like this concept, but I do not recall it previously. What I did avocate was a similar idea that could be used to measure how deeply one has "dug down"...
I'm not sure I see the underlying rationale or the useful application of this system. For a practical example, take the MT top 50 and what Greg Slayden has...
Yes, that's correct, Edward. If you examine the Earth Fifty Finest list's prom distribution a decent fit arises for the CDF choice of alpha = 4.7 ! Here, and...
5067
Adam Helman
helman@...
Oct 1, 2008 6:56 pm
Edward - Your two variants are closely allied to my use of the inverse prominence rank for calculations; and ANDY's use of the prominence ITSELF for...
5068
Adam Helman
helman@...
Oct 1, 2008 7:11 pm
One obvious means of resolving the top-heaviness some perceive with using the unaltered metric climb rank / list rank is to assign an exponent to both...
... It's interesting that you mention the access waiver issue: I was thinking of exactly that when I formulated the depth count metric in the first place! ...
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Adam Helman
helman@...
Oct 1, 2008 7:59 pm
This subject is MUCH more interesting than what I had planned on doing today. 8-) My earlier estimates were based on using not the "depth count" (as I had...
Hi, Just to follow up, in order to compare with the previous "scores" here is the same data for the "climb rank/list rank" metric suggested by Edward: New...
... Don't forget that depth count is NOT specific to a particular cutoff. Its purpose is to calculate your achievement as being equivalent to finishing the top...
Edward, I realize this, however, there is a "practical" consideration, to compute these depths much deeper than say, 50, starts to become cumbersome (at least...
... That is certainly true, though you could go farther than 50. Shouldn't be hard to go through all of the top 100 for the world or, with the "ultra project",...
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Adam Helman
helman@...
Oct 2, 2008 1:26 am
Hello Edward, Suddenly I going through "tax hell" right now - a letter from the California Tax Board has me _completely_ upset. So I simply don't have the...
Duane followed the rest of us up the peak, so had lots of action shot opportunities. I think you'll enjoy. I've uploaded them to my photo sharing site. ...
Sept 16: Climbed Electric Pk (13292, P=832) and Graystone Pk (13489, P=509). This was a 3 day backpack using the DSNGRR leaving me off at Elk Park. 18 ...
5078
Adam Helman
helman@...
Oct 3, 2008 12:07 am
Consider a graph of computed "accomplishment" for a finite prominence peaklist (y-axis) versus the number of peaks climbed (x-axis). For concreteness let the...
Nice to see a trip report on these peaks. I think that whatever the highpoint is--Fishers Peak, the Mesa, or some nearby contour--could be a strong candidate...
No none. Bob ... From: Andy Martin To: prominence@yahoogroups.com Sent: Monday, September 08, 2008 6:01 PM Subject: [prominence] Time for September update to...
I'm in agreement with Bob - any of the three points could be the HP with the 1847+ ft prominence. My hand level was yielding some strange results, so we found...
Before I comment specifically on any of Adam's observations about depth count, let me state what I see as a fundamental requirement of this metric. Its purpose...
As I've mentioned before, there are two flavors of depth count: rank-based, defined as sum(ClimbRank/ListRank) prom-based, defined as sum(ClimbProm/ListProm),...
... I have reviewed the formula used by Jonathan here. My independent derivation agrees exactly with his, and I will endorse it. I checked the positions of...
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Adam Helman
helman@...
Oct 4, 2008 6:11 am
I agree with Edward's assessments for the requirements of a metric to assess "depth count" for a peak list of INDEFINITE depth. Good work. ...
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Adam Helman
helman@...
Oct 4, 2008 8:35 am
In my very last note Eq.[3] is incorrect - p_M (fitted) = p_1 * (p_N / p_1) ^ [(M-1) / (N-1)] Eq.[3] (old) The correct expression is p_M (fitted) = p_1 *...
I used the latitudes lat1=9.121389 lat2=1.469167. I do not know the source of these latitudes, it may have been wikipedia, but they are within one minute of...
Buckner Mtn (Skagit WA cohp, WA prom #50) has two summits, SW and NE, and there has been some discussion about which is higher. The SW summit has always had an...
