NPtest_indept           Test of independence in presence of
                        heteroscedastic treatments
PSSIM_snow              Image structural similarity measure PSSIM based
                        on hypothesis test
makepseudo              Nearest neighbor augmentatation based on ranks
mapindex                Index in one vector mapped to treatment and
                        observation index
miniimagematrix         Mini-image data matrice for example
trt_position            Starting and ending position in a vector
