Subtracts the blank EEM data from sample EEM data. Samples must have metadata and blank data attached prior to running.
Value
An object of class eem or eemlist where the sample data (x)
has been subtracted by the blank data (blk_x).
Details
Blank subtraction requires that blank EEM data be attached to each sample.
This is done with add_blanks(), which in turn requires metadata to be added
via add_metadata().
Examples
eem <- add_metadata(metadata, example_eems)
blanklist <- subset_type(eem, "iblank")
eem <- add_blanks(eem, blanklist)
# Subtract blank from a single EEM
eem_sub <- subtract_blank(eem[[1]])
# Subtract blank from an EEM list
eemlist_sub <- subtract_blank(eem)