There is an IDL routine SVDC that computes the SVD of a matrix. The IDL 8.1 SVDC help page ( Routines (alphabetical) > Routines: S > SVDC) has more information about this routine and some example code.

Hi, IDL 8.1 is crashing when processing the 3x3 matrix contained in https://www.robotic.dlr.de/fileadmin/robotic/stroblk/various/svdc_crash.sav (IDL 8.0 is NOT crashing at that). IDL> restore,'/home/stroblk/svdc_crash.sav' IDL> print,R_temp -0.999944 -0.00302604 -0.0101707 0.00674334 -0.923716 -0.387397 -0.00818223 -0.387443 0.923684 IDL> svdc,R_temp,xv,u,v % SVDC: svdcmp_f did not converge. % Execution halted at: $MAIN$ Could you please help, e.g. forwarding the bug, please? Klaus Strobl