deriving contour intervals
I thought I could define a field with only decimals and then divide the Elevation by 200 to get a contour interval. If my field was only decimals then anything that was zero and not a decimal value would be a contour interval. The trouble is I can't seem to define a field with only decimal values. I tried a Precision of 1, Scale of 1 but the calculation comes out with integer values, not the decimal values. Any ideas?
Mapping Center Answer:
I suggest you download a tool that has been created to do this -- it is available from the Community Maps Template and Tool Gallery. This should do the trick for you. Its predecessor was a tool that we used to have on Mapping Center but we no longer offer it for download here.
Note that you can modify the tool that you download to create the index contours at whatever intervals you want.
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