[R] Storing loop output in matrix

Peter Ehlers ehlers at ucalgary.ca
Mon Jan 31 23:55:47 CET 2011

On 2011-01-31 13:49, Dean Castillo wrote:
> Hello
> I am trying to store output from a loop into an empty matrix. The
> current code I am using is:
>> M<-mat.or.vec(11,89)
>> for (j in list(3,91))
> + {M[,(j-2)]<-pic(datain[,j], mytree)}
> datain is a matrix (11,91). I only want to use the pic() function on
> the columns 3:91.
> When I use this code output is stored into the 1st column of M and the
> 89th column of M but no other columns.

Have you checked what list(3,91) produces?
Hint: help(seq)

Peter Ehlers

> Any help would be greatly appreciated
> Dean
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