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I encounter edge issues when trying to mosaic USGS NED DEMs in ArcGIS 10.0.0. After projection and aggregation, I attempt arcpy.MosaicToNewRaster_management(). I've reproduced the same results using .tif, .img, and GRID formats. I've also reproduced the result using file geodatabases and file folders to store inputs and outputs. I've also tried using arcpy.Mosaic_management() with no luck. Note the unwelcome black border on the bottom which is problematic for analytical applications.

What can be done about the edge issues here?

This question was split from parallelization of raster mosaic.

enter image description here + enter image description here = enter image description here

closed as off-topic by PolyGeo Sep 25 '16 at 8:52

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions seeking help to debug/write/improve code must include the desired behavior, a specific problem or error and the shortest code necessary to reproduce it in the question itself. Providing a clear problem statement and evidence of a code attempt will help others to help you. See: How to create a Minimal, Complete, and Verifiable example." – PolyGeo
If this question can be reworded to fit the rules in the help center, please edit the question.

  • If you have a polygon representing the outline of the mosaic or each of the individual input rasters maybe you could use this to set an analysis mask. I know this does not solve the problem of the black edges but it might allow you to carry out your analysis. You could also convert all the images to points and create a terrain and use this in your analysis. – dango Jan 14 '13 at 9:03