Make spectral intensities relative

make_rel() converts intensities x into relative values between 0 and 1 using the standard normalization equation. If na.rm is TRUE, missing values are removed before the computation proceeds.

Usage

make_rel(x, ...)

# Default S3 method
make_rel(x, na.rm = FALSE, ...)

# S3 method for class 'OpenSpecy'
make_rel(x, na.rm = FALSE, ...)

Arguments

x

a numeric vector or an R OpenSpecy object

na.rm

logical. Should missing values be removed?

...

further arguments passed to make_rel().

Value

make_rel() return numeric vectors (if vector provided) or an OpenSpecy object with the normalized intensity data.

Details

make_rel() is used to retain the relative height proportions between spectra while avoiding the large numbers that can result from some spectral instruments.

See also

min() and round(); adj_intens() for log transformation functions; conform_spec() for conforming wavenumbers of an OpenSpecy object to be matched with a reference library

Author

Win Cowger, Zacharias Steinmetz

Examples

make_rel(c(-1000, -1, 0, 1, 10))
#> [1] 0.0000000 0.9891089 0.9900990 0.9910891 1.0000000