[GRASS-dev] r.regression.multi failing

Paulo van Breugel p.vanbreugel at gmail.com
Wed Mar 23 06:31:34 PDT 2016


I am using r.regression.multi in a python script (using 
grass.run_command()) to compute the variance inflation factor (VIF).  It 
runs in a loop, regressing variables one by one to all the other 
variables. It sometimes happen that the function fails with:

WARNING: Matrix is unsolvable
ERROR: Multiple regression failed

This causes my script to stop. However, I would like to capture this 
warning / error, and continue. Do you know how I can accomplish this?


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