Problems calculating relief using the raster calculator

JerryHolton — Thu, 03 Apr 2014 16:25:17 GMT

Hi,

I have a question about determining relief in ArcMap. I need to determine relief based on a predefined radius around each cell in a floating point 10 meter DEM I downloaded from NED. I believe my radius will be 1 km. I read a previous blog that said to use the following code in the raster calculator:

FocalRange([grid], CIRCLE, [number of cells], DATA)

This is what I entered:

FocalRange("arcgrd3arcsec", CIRCLE, 100, DATA)

After running this expression in the raster calculator, I received an error message that said this:

File "<expression>" line 1, in <module>

"File "<string>", line 5, in rcexec NameError: name 'FocalRange' is not defined.

Failed to execute (RasterCalculator)

I have tried multiple variations of this syntax and receive the same basic message. Does anybody have any ideas on how to do this
or know of easier ways to determine relief? Thanks so much.

Tom

Re: Problems calculating relief using the raster calculator

Luke_Pinner — Fri, 04 Apr 2014 09:18:38 GMT

As of ArcGIS 10, all the Focal* functions were combined into the FocalStatistics tool. FocalRange no longer exists, use FocalStatistics with the 'RANGE' statistic. http://resources.arcgis.com/en/help/main/10.1/index.html#//009z000000qs000000

topic Problems calculating relief using the raster calculator in Geoprocessing Questions

Problems calculating relief using the raster calculator

Re: Problems calculating relief using the raster calculator