Grid Points

Question

Hi, I'm a self- taught ArcGIS user (10.0) and I would like to create grids of points. I tried to use the measured grid option, by turning the grid into a series of points, but when I try to ungroup them so I can just show the ones in my project area ArcGIS crashes.... any ideas? Thanks so much for the help!

MelitaKennedy · Answer

I don't know if there's a tutorial. The Create Fishnet tool is a little complicated possibly because it's modeled after the similar command in ArcInfo workstation. There's a decent topic that has some pictures of what happens if you set a rotation for example.

How Create Fishnet works

You can build the fishnet in any coordinate system. Sometimes it's easier to build a lat/lon one while at other times, it's easier to build one based on the coordinate values of a projected coordinate system (like UTM). You need to have the spatial extent and  the "cell size" or distance between grid lines. Alternatively, you can have a lower left corner plus how many 'rows' and 'columns' you want. If you have the later, the tool will figure out the separation distance for you.

Note: If I remember correctly, the dataset created by the tool won't have a defined coordinate system, so you'll want to do that first with the Define Projection Tool.

Melita

EricGriffis · Answer

Is there a tutorial of how to do this? No one in our GIS department seems to know how to do this. Thanks.

CindyCarter-_Davis · Answer

Melita, 
Thanks so much, it worked great!!! You just saved e abut 8 hours of making dots