I'm trying to figure it out, but could not do it. I want to get rid of all lines with values of "0", but not saving the identification numbers of the remaining lines.
ID B C D 1_2 34 42 12 1_3 34 32 2 1_4 0 0 0 1_5 12 33 12
the conclusion should be
ID B C D 1_2 34 42 12 1_3 34 32 2 1_5 12 33 12
if you want to delete rows containing 0 or a lot for columns B, C or D:
DF[apply(DF[c(2:4)],1,function(z) !any(z==0)),]
or only when all columns B, C, D contain 0:
DF[apply(DF[c(2:4)],1,function(z) any(z!=0)),]
If tmp is the name of the data.frame source file, then the following works:
tmp2 <- data.frame(Reduce(rbind,apply(tmp,1,function(x){if(any(x==0)){NULL}else{x}})))