[R] for 1:length and removing rows

[Markus Mühlbacher]

Hello everyone,

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?

Best wishes,
Markus