Re: [MORPHMET] determining if groups of specimens are statistically distinct.

2018-10-05 Thread Dean Adams
Ian, The command summary(manova(..)) will perform a parametric manova. However, for the datafile you sent, that operation will not be possible because the number of variables relative to sample size (note, you posted a similar issue about a month ago to Morphmet). The alternative is to use

Re: [MORPHMET] MANOVA

2018-09-07 Thread Dean Adams
Ian, This means you have more variables than specimens, which your data file confirms. A parametric manova is not possible, because the algebra cannot be completed, because the covariance matrix will be singular. Dean Dr. Dean C. Adams Director of Graduate Education, EEB Program

Re: morphometric measures of dimorphism

2010-07-28 Thread Dean Adams
Heather, Sexual dimorphism is the difference between males and females, so one can quantify this as the difference between average phenotypes for each sex. This literally is a vector in shape space connecting the mean male and mean female shapes. The length of this vector describes how much