Tuesday, June 14, 2016

64-bit TIFF images not supported in ArcGIS

Earlier this week I encountered an interesting phenomenon. Some output TIFF images in ArcMap kept displaying like the one below.  I tried deleting pyramids, rebuilding pyramids, but to no avail.  However, the images displayed perfectly well at < 1:250,000 map scale.  Then I noticed that the image was 64-bit depth.  It turns out that even though Esri supports 64-bit rasters for display not all functions work properly.  I forwarded this to Esri support and it turns out that this is a limitation of the software not a bug.  There are plenty of workarounds for this problem.  Simply converting to 32-bit works.  As does converting to a file geodatabase format.  However, I think that having this out there as a known limitation in the blogosphere might do some good.  Check out the link below for the list of supported raster formats in ArcGIS 10.3.


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