Method to compute the "parallel" sum of values across members of a collection of spectra or of a spectral object containing multiple spectra in long form.
s_sum(x, na.rm, ...)# S3 method for default
s_sum(x, na.rm = FALSE, ...)
# S3 method for generic_spct
s_sum(x, na.rm = FALSE, ...)
# S3 method for filter_mspct
s_sum(x, na.rm = FALSE, ...)
# S3 method for source_mspct
s_sum(x, na.rm = FALSE, ...)
# S3 method for response_mspct
s_sum(x, na.rm = FALSE, ...)
# S3 method for reflector_mspct
s_sum(x, na.rm = FALSE, ...)
# S3 method for calibration_mspct
s_sum(x, na.rm = FALSE, ...)
# S3 method for cps_mspct
s_sum(x, na.rm = FALSE, ...)
# S3 method for raw_mspct
s_sum(x, na.rm = FALSE, ...)
If x is a collection spectral of objects, such as a
"filter_mspct" object, the returned object is of same class as the
members of the collection, such as "filter_spct", containing the
summary spectrum, with variables with names tagged for summaries other
than mean or median.
An R object.
logical A value indicating whether NA values should be stripped before the computation proceeds.
Further arguments passed to or from other methods.
s_sum(default):
s_sum(generic_spct):
s_sum(filter_mspct):
s_sum(source_mspct):
s_sum(response_mspct):
s_sum(reflector_mspct):
s_sum(calibration_mspct):
s_sum(cps_mspct):
s_sum(raw_mspct):
Method specializations compute the sum at each wavelength across a
group of spectra stored in an object of one of the classes defined in
package 'photobiology'. Omission of NAs is done
separately at each wavelength. Interpolation is not applied, so all spectra
in x must share the same set of wavelengths. An error is triggered
if this condition is nor fulfilled.