[GRASS-dev] r.regression.multi failing

[Paulo van Breugel]

Hi,

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?

Paulo