3 messages · Dean Castillo, David Winsemius, Peter Ehlers
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.
Any help would be greatly appreciated
Dean
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)
R code to create a matix would use the matrix function,
for (j in list(3,91))
+ {M[,(j-2)]<-pic(datain[,j], mytree)}
You seem to be coming from a programming paradigm tha t uses "," where R would use ":" list(3,91) is a two element object rather than 3:91 which would be an 89 element object. Perhaps you should read some introductory material and get a better handle in the R syntax through self study. http://cran.r-project.org/doc/manuals/R-intro.pdf
datain is a matrix (11,91). I only want to use the pic() function on the columns 3:91.
What pic function??? > ?pic No documentation for 'pic' in specified packages and libraries: you could try '??pic'
When I use this code output is stored into the 1st column of M and the 89th column of M but no other columns. Any help would be greatly appreciated Dean
David Winsemius, MD West Hartford, CT
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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