Hello,


I wish to carry out the following:


factor_classes <- as.factor(sample(c("BM", "SM", "F"), 10, replace = TRUE))


C <- 5


k <- matrix(0, length(factor_classes), 1)


for (i in length(factor_classes)) {


k[i] <- C*factor_classes[i]


}


I get the following error message:

non-numeric argument to binary operator


I wish to store the results of C*factor_classes[i] in matrix k. 
Is there any way I can multiply the factor with the numeric variable? 


Thanks for your help in advance.


Cheers,

sumaria 
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