[R] for 1:length and removing rows
muehliman at yahoo.com
Thu Sep 4 17:33:06 CEST 2008
I have a problem using a for-loop to go through a matrix. I want to remove all rows with a sum of 0.
What I do is basically:
for(i in 1:length(data))
if(sum(add(data[i,]) == 0)
data <- data[-i,]
I get a error message: "Error in `[.data.frame`(data, i) : undefined columns selected", because the length is reduced when removing in the if-clause.
How do I make this?
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