or canola groups.
There is also some useful information in the third direction, e.g.,
those having high positive variates in the first direction and high
negative variates in the third direction are most probably sun-
flower. It should be noted that since 6 classes were analyzed by
ECVA, we should use 5 extended canonical variates for accurate
classification. However, their visual inspection is difficult and its
better we rely on the computations rather than visualization.