Hi,
this is a question concerning i.gensigset:
I generated a signaturefile containing the
following classtype; I suppose covar shows
the covariance matrix but I don't understand
why there are negative values (theoretically
a "normal" covariance matrix should not
include negative values ?).
classtype: 1
subclass:
pi: 1.000000
means: 28.729358 21.571101 71.933486 8.634557
covar:
46.942043 7.925971 132.644078 -0.054562
7.925971 16.780113 -2.244889 -0.098634
132.644078 -2.244889 541.903068 0.468048
-0.054562 -0.098634 0.468048 1.889387
Thanxx L