Identify which points are in which grid cell - is it possible?

ShannonTroy — Fri, 17 Dec 2010 01:41:27 GMT

Hi all,

I'm a fairly new ArcGIS user hoping that I might be able to get some assistance with what seems like a straightforward question....

I have a grid layer and a point layer. Each point represents a trap that was set for an animal, and the grid represents the animal's presence/absence. In my preceding analysis I used the sample tool to extract raster values to the presence/absence grid. In a nutshell, I now need to know which traps fall within each grid cell. Each grid cell "contains" between 1 and about 200 points.

I'd like the output as a table that lists first the grid and then the point attributes, for example:

Cell Id   Trap No
1          1
1          11
1          79
1          222
1          4
2          13
2          6
3          53
3          21
3          182

In my mind the function I would like to use is kind of the opposite of the extract tool - instead of assigning raster values to points, I want to assign point attributes to each raster. Is there a way to do this in ArcGIS 9.2?

Many thanks

Shannon

Re: Identify which points are in which grid cell - is it possible?

RachelOlsen — Fri, 17 Dec 2010 16:50:21 GMT

Hi Shannon,

If your grid is a vector, you could select grid cell 1 (for example) and then select by location. Select all traps within your selection (cell 1) . But I have 9.3.1 and I'm not sure if you have select by location on 9.2. If you have many cells it could be a lengthy process and maybe there's a faster way. Hope this helps.

Steps: Open attribute table of grid, select cell 1, go to menu select, select by attribute, Select features from "point feature" (your traps) that are within your grid feature and clic use selected features, apply.

Good luck

topic Re: Identify which points are in which grid cell - is it possible? in ArcGIS Spatial Analyst Questions

Identify which points are in which grid cell - is it possible?

Re: Identify which points are in which grid cell - is it possible?