search for: cti_var

...t always match. Then my script takes the reduced model formula and recreates it using lrm as above. Now the problem is that for some models I run into an error to which I can find no reference whatsoever on the mailing list or on the web. It is as follows: test.lrm <- lrm(cclo ~ elev + aspect + cti_var + planar + feat_div + loamy + sands + sandy + wet + slr_mean, data=datamatrix, x = T, y = T) singular information matrix in lrm.fit (rank= 10 ). Offending variable(s): slr_mean Error in j:(j + params[i] - 1) : NA/NaN argument Now if I add the singularity criterion and make the value smaller tha...