Hi all,
First time poster, so sorry if I commit some breech of posting etiquette.
My problem is as follows. I have a data frame where each column represents
a category and the individual data points in each category are binary
responses (in this case they are actually 1's and 0's). What I want to
extract are the counts for each category and put them in a vector. To do
that I used the following:
cats<-c("cat1","cat2", "cat3", ...)
c()->counts
for(j in cats){
append(counts, sum(data$j)) -> counts
}
However, the 'counts' object only contains 0's after the script runs:
counts
[1] 0, 0, 0, ....
After replacing various elements in the script to isolate what the issue
is, I've discovered the problem stems from "data$j". Is there a reason
using a variable with the subset operator is bad?
Thanks,
Allan
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
