[R] Deleting colmuns with 0's and also writing multple csv files

DarioAustralia D.Strbenac at garvan.org.au
Fri Feb 19 07:46:49 CET 2010

Hi Anna,

A column with all 0s will have a column sum of zero. So do this :

dataset1[, which(colSums(dataSet1 > 0))]

If you have a list of data.frames you could do this

for(index in 1:10)
        write.csv(yourListOfTables[[index]], file = paste("Dataset", index,
".csv", sep = ""), row.names = FALSE)

- Dario.
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