Optimize code to filter R dataframe -


i have r code takes in args string command line , filters dataframe based on values in column; args string contains column names. right i'm doing looping through vector tells me there has better way. there way optimize code? 

args = c("col1","col2") for(i in args){   df = df[df[,i]==0,] }

if understand correctly, want keep rows of args equal 0 (or other given value).

first indices of columns you're interested in:

idx <- match(args, colnames(df))

then can do:

df <- df[apply(df[, idx], 1, function(x) all(x == 0)), ]

another possibility:

df <- df[rowsums(df[, idx] != 0) == 0, ]

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