stush

Slice's EQUAL_AREA method

Discussion created by stush on Mar 28, 2013
Latest reply on Mar 29, 2013 by erice-esristaff
Hi all -

I'm trying to use the Slice tool to group a script's result raster by a user-defined X%, which seems straightforward enough.  The resulting value distribution may not be normally distributed, which, the Slice doc says, is not optimal for use of the tool.  Now, I understand that using the EQUAL_INTERVAL method may produce empty classes, or classes with very few cells.  That makes sense because there just may not be cells with values that fall within the interval.  However, often when I use EQUAL_AREA I also get empty classes, which doesn't make sense to me, and the doc doesn't explain why this might happen.  It seems that if it's basing the grouping on area (which is always there) and not just value, there's no chance of missing values, unlike EQUAL_INTERVAL.  Can anyone shed light on why this would happen?  As it is, I might have to write my own Slice command to get better results.  Thanks!

~ Stacie

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