Seth and James!
Thank you very much for your help! The new code is working properly.
The background of my idea is that 'points' are the centroids of
voronoi polygons; they generate four or eight new mobile points
(secpoints) in order to create new borderline points between two
polygons. The result of this fine-tuning process is a new voronoi
diagram with a better interpolation.
--- In firstname.lastname@example.org, Seth Tisue <seth@...> wrote:
> >>>>> "andreko42" == andreko42 <andreko42@...> writes:
> andreko42> Hello! I wish to implement a procedure which enables
> andreko42> moving to four and eight directions, respectively (von
> andreko42> Neumann or Moore neighborhood). My idea is as follow (to
> andreko42> move to Nortn, East, South and West):
> andreko42> ask points [hatch-points 4 [set breed secpoints]] let
> andreko42> factor 0 ask secpoints [set heading (factor * 90) set
> andreko42> factor + 1]
> andreko42> In fact, there is often an overlay of two or three
> andreko42> moving to the same direction. What can I do, that each
> andreko42> is walking to only one of the four directions?
> If I understand correctly what you're trying to do, you need to
> your code around a little, as follows:
> ask points [
> let factor 0
> hatch-secpoints 4 [
> set heading (factor * 90)
> set factor factor + 1
> In the new code, each group of 4 secpoints has its own "factor"
> variable, instead of a single factor variable being shared by
> all of the secpoints in the world.
> You could also do:
> ask points [
> foreach n-values 4 [? * 90] [
> hatch-secpoints 1 [ set heading ? ]
> I also like the approach James Steiner suggested.
> Seth Tisue / http://tisue.net
> lead developer, NetLogo: http://ccl.northwestern.edu/netlogo/