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2009 Aug 09
1
problem adding columns to matrix
Hi all, i purchased a copy of the book Morphometrics with R by Springer.
at the end of each chapter there are exercises to train what you just
read and (hope) learned...
so i have this problem:
Define a hypothetical data frame containing five measurments normally
distributed(size,head,pectoral,area,weight) for four individuals
(named ind1, ind2, etc). ADD A COLUMN corresponding to the factor sex
with individual 1 & 2 being Males and 3 & $ being Females.
HERE IS HOW I PROCEDED, getting 2 problems
1) what are those warning messages i got when i generate the m matrix
(the...