try the nodatasetter.

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Hi,

 

 

Have you tried setting a preferable Nodata value to the "Output DEM Raster Nodata Value" parameter of the SurfaceModeller?

 

 

Takashi

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Your error suggest that the value nan is not acceptable for a raster , try a numeric value such as 9999 or 0 for your nodata value.

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Hey Talashi - I already have a NoData value that is working, which is -32767.0, then I also have NaN cells as well so I don't think this setting is what I am looking for.

 

 

Itay - I think you are getting at the NoData value? My understanding of NaN is that is is not a number so it would not be 9999 or 0.

 

 

To simply my question: given that you have a 32 bit raster that has normal double values, has a NoData value set as -32767.0, and also has NaN values, what is the simplest way to make the NaN values into NoData values?

 

 

I have managed to do this but I'm not sure how efficient the process would be with larger datasets:

 

I first convert the raster to points, then do a AttributeClassifier (passing only points that are "double") and then using NumericRasterizer to arrive back at a raster. This does the trick but is there a more efficient method?

 

 

 

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I would try the RasterCellValueReplacer, but I have my doubts about it....

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Just tried RasterCellValueReplacer, if I input 'nan' into the parameters, the output is a blank raster, so I don't think it is meant to replace a nan value. 

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It seems that "nan" is treated internally as a numeric value smaller than any valid value when comparing values.

Try the RasterCellValueReplacer with this setting:

Replace Values <=: -32767

New Value: -32767

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much more efficient !

 

thanks to you both

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It seems that "nan" is treated internally as a numeric value smaller than any valid value when comparing values.

Try the RasterCellValueReplacer with this setting:

Replace Values <=: -32767

New Value: -32767

An application. This workflow removes every "nan" point from the source point cloud feature.

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By me works well with raster with NaN nan or -nan Nodata value:

1. RasterPropertyExtractor

2. PointCloudCombiner with options: Extract NoData = No

3. NumericRasterizer, set Cell Spacing and extent with the value extracted with RasterPropertyExtractor. Set your nodata value, example -9999

   

    

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