topic Auto Color Code Rasters in Data Management Questions

Auto Color Code Rasters

RichardSullivan — Tue, 09 Nov 2010 17:05:41 GMT

Okay, so now I have hundreds of Rasters each comprising a stretch of beach (see my earlier post: http://forums.arcgis.com/threads/16896-Divide-a-raster-even-sections?p=53157&posted=1#post53157 ).

I would like to assign each one color based on the highest elevation in each raster. Rather than go through by hand and classify based on value, is there a script or method to automate the process?

For example, if the highest point in a raster is below 2 meters, I want it to be blue. If the highest point is above 9 meters, I want it to be yellow. So on and so forth...

Any thoughts on how to do this? Can you reclassify a bulk set of rasters all at once?

-Thanks

Re: Auto Color Code Rasters

RichardSullivan — Tue, 09 Nov 2010 17:40:10 GMT

Here's a thought... What about a conditional statement about contour lines that cross rasters? Can I set up a rule to assign one color to a raster if it is crossed by a contour line of a certain value?

Example, if the raster is crossed by the 5m contour, it's red. If crossed by the 2.5, green.

Now, how might I go about doing this for hundreds of rasters at once?

Re: Auto Color Code Rasters

RobertBerger — Tue, 09 Nov 2010 21:26:56 GMT

Hi again,

Is your data integer or floating point? If you have integer data within 16 bit range then you might be able to use colormaps (assuming you want color the pixel value and not the whole scene based on the min/max values in the scene?).

Robert