topic Re: raster calculator issues!! in Python Questions

raster calculator issues!!

StephanieHooper — Thu, 22 Mar 2012 03:20:50 GMT

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Raster Calculator issues
I have tried every suggestion I've come across to use Raster Calculator to fill my 'NoData' holes in mosaic-ed Raster DEM.

I'm using ArcMap 10 and the equation I've been told to use is:

Filled_DEM = Con(isnull(["mosaic"]),FocalMean(["mosaic"], rectangle,4,4),["mosaic"])

ive tried changing around the capitalization, spacing, and even read somewhere that in ArcMap 10 focal stats. no longer works so I used :

Filled_DEM = Con(IsNull(["mosaic"]),FocalStatistics(["mosaic"], NbrRectangle(3,3),"MEAN"),["mosaic"])

and STILL nothing. can someone please help me - I've sat for hours trying to figure this out and I feel as though I've run out of options!!! Thanks!!!

Stephanie

Re: raster calculator issues!!

MatthiasBuehler1 — Fri, 23 Mar 2012 14:04:37 GMT

Hi Stephanie

I just move this thread to the correct place (I hope). You posted it in the CityEngine Python section.

Hope you get help here .. ! Good luck !

matt

Re: raster calculator issues!!

JeffreyEvans — Fri, 23 Mar 2012 17:38:40 GMT

Stephanie,
In ArcGIS 10 the syntax you are using is no longer valid. You can no longer assign results to a new raster with "=" and you no longer need brackets "[]" around your raster names.

Try this:
Con(IsNull("mosaic"), FocalStatistics("mosaic", NbrRectangle(3, 3, "CELL"), "MEAN"), "mosaic")

You will need to define your output raster in the dialog at the bottom of the raster calculator.