All,
Greetings! I hope things are going well for all! I apologize if someone's
already answered this and I'm just not finding it. Here's what I'd like to
do, but I'm hitting a brick wall with it.
I have two sets of points for which I've already determined which ones
points for the boundaries with the chull function. What I need for what
I'm doing is the coordinates where the two resulting polygons overlap.
These are not raster grids, nor shapefiles. What I have to work with are
the two data frames with the points at the vertices of each polygon
(included below).
> chx1
x y
1 0.5822569 -0.5555878
2 0.5338428 -0.5883604
3 -0.3442943 -0.6701115
4 -0.7409293 0.2286962
5 0.2147221 0.8061485
6 0.4914146 0.4941865
7 0.5822569 -0.5555878
> chx2
x y
1 0.7163506 -0.4357497
2 0.6513128 -0.5395180
3 0.1818315 -0.6317423
4 -0.6394281 -0.5765610
5 -0.6044681 0.1831627
6 -0.5799485 0.3231473
7 0.2248476 0.9601908
8 0.7163506 -0.4357497
If anyone has any ideas on how to get what I'm after I'd appreciate it!
I've tried a lot of things from the raster, rgeos, and more. Knowing me
it's something obvious I'm just not seeing right now.
Thanks all!
Adrienne
--
Adrienne Wootten
Ph.D Candidate / Graduate Research Assistant
State Climate Office of North Carolina
Department of Marine, Earth and Atmospheric Sciences
North Carolina State University
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