Multiple values per polygon
In my map, I am trying to show the numbers of deeds with race restrictions, numbers of deeds without race restrictions, and numbers of deeds where the information is not know, by the Public Land Survey System section. I've created three different layers to represent each of these features. The problem is that that, if I use graduated or proportional symbols, they are all placed in the center of the section, with the larger ones overlapping the smaller ones.
In one of the forums, at http://forums.esri.com/Thread.asp?c=93&f=988&t=177757, the author (in 2006) wrote:
"One thing you could do is create a grid of square polygons (each polygon being the size of the area you'd like a label to appear in) that covers the area of your other polygons. GridPolys1
Then use the Clip tool to clip the square polygons to match your original polygons. GridPolys2
Then use a Spatial Join (Intersect) so that each square polygon gets the attributes of your original polygon. GridPolys3
Now you can label the map using the attributes from GridPolys3"
Would you be able to tell me how I do the first step -- "creating a grid of square polygons"? I have the book _GIS Tutorial Updated for ArcGIS 9.2_, but have only gotten through the chapter on "Geodatabases". Is there a section later in the book that would explain how to do this, or something in the ArcView 9.3 Help that would explain this?
Mapping Center Answer:
You can use the Create Fishnet tool in ArcToolbox to create a grid of regular polygons.
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