topic Re: raster calculator issues! in Data Management Questions

raster calculator issues!

StephanieHooper — Thu, 22 Mar 2012 03:32:09 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!

JeffreySwain — Thu, 22 Mar 2012 11:21:14 GMT

Be advised that at 10, with the Python interface, there are different tools to replace the older ones. I recommend trying to break it down in pieces with the specific geoprocessing tool in ArcToolbox and then copy it to the Python Window to see the syntax. Once you have the pieces in place, then assembling them in Raster Calculator will be not problem.

Con(IsNull('mosaic'), FocalStatistics('mosaic', NbrRectangle(4,4, CELL), 'MEAN', 'DATA'),"mosaic")

Also in the Raster Calculator syntax, I do not think you need the "Filled_DEM = " part.

Re: raster calculator issues!

TarunJaiswal — Thu, 22 Mar 2012 13:49:57 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

Hello and greetings!

Please take a look at the following Knowledge Base - Remove and replace no data values within a raster using statistical information from the surrounding data values.

Hope this helps.

Thank you.

Re: raster calculator issues!

ChrisBrannin — Thu, 13 Jun 2013 17:21:29 GMT

Everytime I run this, I get error 000539!?

Re: raster calculator issues!

MelitaKennedy — Fri, 14 Jun 2013 19:46:41 GMT

The help for the error says that it includes the issue that Python has encountered. What's the exact text you're getting with the error?

Re: raster calculator issues!

ChrisBrannin — Sat, 11 Dec 2021 23:16:28 GMT

The help for the error says that it includes the issue that Python has encountered. What's the exact text you're getting with the error?

Thank you for responding to this. when I enter:

Con(IsNull('dem0'), FocalStatistics('dem0', NbrRectangle(9,9,"CELL"), 'MEAN'), "dem0")

I usually see error number 1: exceptions.TypeError: cannot concatenate 'str' and 'int' objects.

But I just ran it again and have this: Error running expression: rcexec()

Thank you for any insight on this.

Re: raster calculator issues!

JeffreySwain — Mon, 17 Jun 2013 20:24:36 GMT

In the Results window, what is the exact syntax that is being run? Can you post that? Also is 'dem0' in the map document? It seems to be that it cannot resolve the naming of the raster. Also can you run the script in segments? Will the IsNull work on it's own? Focal Stats?

Re: raster calculator issues!

ChrisBrannin — Tue, 18 Jun 2013 13:14:10 GMT

In the Results window, what is the exact syntax that is being run? Can you post that? Also is 'dem0' in the map document? It seems to be that it cannot resolve the naming of the raster. Also can you run the script in segments? Will the IsNull work on it's own? Focal Stats?

'dem0' is in the map document. I have tried with multiple different raster images as well. I tried to run the tool in segments and get the same error 000539. I even tried run the tool as a stand alone python script but get the tool is not licensed error. I posted the syntax I used above? What am I missing?