Question

database$VAR
which has values of 0’s and 1’s.

How can I redefine the data frame so that the 1’s are removed?

Thanks!

Answer 1

Try this:

R> df <- data.frame(VAR = c(0,1,0,1,1))
R> df[ -which(df[,"VAR"]==1), , drop=FALSE]
  VAR
1   0
3   0
R> 

We use which( booleanExpr ) to get the indices for which your condition holds, then use -1 on these to exclude them and lastly use a drop=FALSE to prevent our data.frame of one columns from collapsing into a vector.