mask_values: mask values
In olobiolo/siscreenr: Analyze Genome-Wide siRNA Screening Campaigns

Description Usage Arguments Details Value Examples

Mask certain values in the screen object to be omitted in downstream analysis.

1	mask_values(scr, cols, preds)

`scr`	a `data.frame`
`cols`	character vector of column names to be masked
`preds`	logical predicate that will determine masking or a list of such predicates of the same length as `cols`: a single predicate will be applied to all `cols`, multiple predicates will be applied to the respective `cols`; predicates can be given as bare expression or character strings

Selected values (observation-variable fields) can be replaced with NAs, so that they are omitted from normalization, standardization, and hit scoring.

A modified data.frame where the masked values are set to NA.

Iris <- rbind(head(iris), tail(iris))
mask_values(Iris, "Sepal.Length", Species == "setosa")
mask_values(Iris, "Sepal.Length", "Species == \"setosa\"")
mask_values(Iris, c("Sepal.Length", "Sepal.Width"), Species == "setosa")
mask_values(Iris, c("Sepal.Length", "Sepal.Width"), list(Species == "setosa", Species == "virginica"))