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Value range changes when using mosaic

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09-02-2013 01:40 PM
JeffBoyd
Deactivated User
When I use the mosaic tool to combine two or more integer (or float) rasters, originally DEM's, the value ranges (elevation) change.  For example, one raster has a range of values from 1189 - 1513, the other 1215-1557.  I expect the mosaicked raster to range from 1189-1557.  But, instead, I get a value range of -32768 to 32767.  So, the mosaicked raster is useless to me.
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3 Replies
JimCousins
MVP Alum
Jeff,
It sounds like you need to calculate statistics on your resulting raster dataset, to get ArcMap to find the min and max values.
Regards,
Jim
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JeffBoyd
Deactivated User
Jim,  I tried running statistics on both rasters, and got the same result when running mosaic, so my problem hasn't changed.
thanks
Jeff
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JimCousins
MVP Alum
Have you run statistics on the mosaic output?
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