topic Re: How to rank pixel values from multiple rasters in ArcGIS Pro with Python in ArcGIS Spatial Analyst Questions

How to rank pixel values from multiple rasters in ArcGIS Pro with Python

FrankHanssen — Fri, 15 Mar 2019 11:19:28 GMT

Hi,

I have a stack of 20 ecosystem service rasters (values from 0 to 1) and I want to derive a ranked list of values from the stack when clicking on a pixel. Any ideas or recommendations? I am a newbee in Python, and would like to use the python code as a parametric tool in modelbuilder.

Best regards,

Frank

Re: How to rank pixel values from multiple rasters in ArcGIS Pro with Python

curtvprice — Sat, 16 Mar 2019 05:06:58 GMT

I think you may be underestimating the dimensionality of the problem, to pre-calculate this information per cell with a script tool would require cranking through an awful lot of data, it sounds like what you would want to do would require a sort of 20 values for every pixel, for an 1000x1000 x20 raster that's 20 million sorts. Unless I'm not understanding what you are asking for in your brief description.

Re: How to rank pixel values from multiple rasters in ArcGIS Pro with Python

FrankHanssen — Sat, 16 Mar 2019 05:12:13 GMT

What I meant was to rank and list 20 values for a spesific pixel by clicking on it

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Re: How to rank pixel values from multiple rasters in ArcGIS Pro with Python

curtvprice — Sat, 16 Mar 2019 05:24:53 GMT

Something along the lines of this, with the Feature Set linked to a point feature class as a tempalte, and Calculate Value populated with a python function to read results from the table, sort, and return a formatted result, should do the trick.

Re: How to rank pixel values from multiple rasters in ArcGIS Pro with Python

FrankHanssen — Sat, 16 Mar 2019 05:28:25 GMT

Thanks a lot! I will check it out?

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