Counting points within a buffer in a polygon

Discussion created by SarahElmeligi on Apr 16, 2013
Latest reply on Apr 18, 2013 by gudeso

I'm pretty new to GIS, so maybe there is a simple solution to my problem and I just haven't been able to figure it out.

I'm trying to figure out how to count the number of points within a buffer that is within a polygon.

For example, I've got three layers that I'm working with for this exercise:
1. An animal's home range (polygon)
2. An animal's GPS locations (point data)
3. A series of trails (line polygon data)

I've buffered the trails within the animals' home range. I've also joined the home range with the point data (I found some forum emails suggesting that was the place to start).

Next I'd like to count the number of GPS locations within the buffer of the trails.

Can anyone out there help?