[R] count number of TRUEs in each row
wendy2.qiao at gmail.com
Sun Apr 10 23:24:09 CEST 2011
I have a huge matrix of TRUE/FALSE table like following, and I want to count
the number of TRUEs in each row. Instead of looping through each row and do
length(Z[Z==TRUE]), I am wondering if there is an easier way of doing this.
[,1] [,2] [,3]
[1,]TRUE FALSE FALSE
[2,]FALSE TRUE TRUE
Thank you in advance.
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