Remove 0 columns/rows — filterZeroCols • pRoloc

Removes all assay data columns/rows that are composed of only 0, i.e. have a colSum/rowSum of 0.

filterZeroCols(object, verbose = TRUE)

filterZeroRows(object, verbose = TRUE)

Arguments

object: A MSnSet object.
verbose: Print a message with the number of filtered out columns/row (if any).

Value

An MSnSet.

Author

Laurent Gatto

Examples

library("pRolocdata")
data(andy2011goCC)
any(colSums(exprs(andy2011goCC)) == 0)
#> [1] FALSE
exprs(andy2011goCC)[, 1:5] <- 0
ncol(andy2011goCC)
#> [1] 569
ncol(filterZeroCols(andy2011goCC))
#> Removing 5 columns with only 0s.
#> [1] 564