Preserve colormap when performing an Extract By Mask

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04-03-2012 06:07 AM
stephencrook
New Contributor II
Hi all!  I am having a problem preserving a colormap once I extract by mask to get a subset of raster data.  I made a mosaic of three images, then converted it to a single raster (future analysis looked difficult if I had kept it as a mosaic file).  Then I used extract by mask to take a large portion of the marine parts of the mosaic.  I guess because of some of the statistics involved it didn't want to keep all of the water a nice dark blue color as it was when the land areas were also part of the raster.

I found this tutorial for version 9.x, but it isn't relevant to 10.  Does anyone know how to do what is outlined in the following tutorial in ArcGIS 10?

http://support.esri.com/en/knowledgebase/techarticles/detail/31936

Thanks
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MohammedAlmotawa
New Contributor II

It didn't work for me. I couldn't change the values (it is grey). However, I've changed it from the 'Image Analysis' window.

Windows > Image Analysis > One click on the raster file > Match the values under 'Display' with your original image.

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