create default symbology for raster datasets, based on NDVI

MarcusRicci — Tue, 12 Jun 2012 19:58:33 GMT

I have downloaded several .hdf files of MODIS satellite imagery. It is 16-bit, signed integer data with values from -2000 to +10,000. I then divide the values by 10,000 using Raster Calculator to get a raster of NDVI values from 0.00 to 1.00. I would like to create some sort of symbology definition in which I can create the categories and colors assigned by the USGS, so that I do not have to manually enter these for each and every raster I process. Unfortunately, not one of these images has the full range of values - from 0.00 to 1.00 - it is usually on the low end for winter images and the high end for summer spring images, so I cannot use one of these datasets as a template.

Any suggestions? I do not think I can create a color map since it is 16-bit signed.

Thank you,
Marcus Ricci
USACE CERL, Champaign, IL
University of Illinois at Urbana Champaign

Re: create default symbology for raster datasets, based on NDVI

JeffreySwain — Wed, 13 Jun 2012 11:29:49 GMT

If you are not interested in something like the Image Analysis Window for the NDVI or in the procedure to create the look in a mosaic dataset, then I would recommend creating a dummy raster with the full range of values and create a layer from that output. That layer can be applied to all of your other rasters.

topic create default symbology for raster datasets, based on NDVI in Data Management Questions

create default symbology for raster datasets, based on NDVI

Re: create default symbology for raster datasets, based on NDVI