gmostroff

Querying Large Raster is SLOW!!!

Discussion created by gmostroff on Apr 18, 2012
Latest reply on Apr 19, 2012 by gmostroff
I am running ArcGIS 10 on a new Windows 7 machine.  Generally, my performance is quite good, especially as compared to my old Windows XP machine, but I am having a real problem with 3-D Analyst and Spatial Analyst.

I have a DTM comprising 3-ft cells for all of NYC.  I am looking at a small part of it that I created as a separate file.  I can classify it, use the Raster Calculator on it, Identify it, etc. fairly easily, but when I try to use the shortest path tool, the contour tool, or the interpolate a line (to make a cross section) tool, either in 3-D analyst or off the Catalog Toolbox, it runs FOREVER!  When I do the same operations on a TIN that I created from a selection of points in the raster, it is is done immediately.  Is this just a function of the small cell size???

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