Terrain Ruggedness Index Phyton code

Question

Hello!

Does anyone know how to get the code to calculate the terrain ruggednes index (TRI, Riley 1999) using python in arcgis 10.1. I have no knowledege about python code...

thanks for the help!

NeilAyres · Answer

And the link posted by ObiDan is pretty well explained in terms of what to do in the raster toolbox / raster calculator.

Before getting into the details of coding this in python, why not do it by hand a few times and experiment there.

There is a lot of help here and at python.org and many others on python coding.

DanPatterson_Retired · Answer

What code do you have? there are other links as well.

You could re-implement Jeff Jenness's tool for ArcView 3.x at

http://arcscripts.esri.com/details.asp?dbid=14156

changing from Avenue to ArcPy and Python would work.

I don't know what you mean by an approximation... the references and interpretations of TPI are well documented on the website and reference published literature.

Or are you want a pure python implementation?  If so, you should indicate:

* what moving window algorithm you are using
* what algorithms you are using for the various steps

This will simplify suggestions and clarify what deficiencies are not covered by the existing interpretations.

LlorençCastell_Fabregues · Answer

Thanks for the answer, I knew this website, but this is only an apporximation, I would like to know the entire python code for the TRI, to do some tests amd modifications in the code.

thanks