Convert a 'wide' or untidy data frame into a collection of spectra
Convert a data frame object into a "multi spectrum" object by constructing a an object of a multi-spct class, converting numeric columns other than wavelength into individual spct objects.
split2mspct( x, member.class = NULL, spct.data.var = NULL, w.length.var = "w.length", idx.var = NULL, ncol = 1, byrow = FALSE, ... ) split2source_mspct( x, spct.data.var = "s.e.irrad", w.length.var = "w.length", idx.var = NULL, ncol = 1, byrow = FALSE, ... ) split2response_mspct( x, spct.data.var = "s.e.response", w.length.var = "w.length", idx.var = NULL, ncol = 1, byrow = FALSE, ... ) split2filter_mspct( x, spct.data.var = "Tfr", w.length.var = "w.length", idx.var = NULL, ncol = 1, byrow = FALSE, ... ) split2reflector_mspct( x, spct.data.var = "Rfr", w.length.var = "w.length", idx.var = NULL, ncol = 1, byrow = FALSE, ... ) split2cps_mspct( x, spct.data.var = "cps", w.length.var = "w.length", idx.var = NULL, ncol = 1, byrow = FALSE, ... ) split2raw_mspct( x, spct.data.var = "count", w.length.var = "w.length", idx.var = NULL, ncol = 1, byrow = FALSE, ... ) split2calibration_mspct( x, spct.data.var = "irrad.mult", w.length.var = "w.length", idx.var = NULL, ncol = 1, byrow = FALSE, ... )
x |
data frame |
member.class |
character Class of the collection members |
spct.data.var |
character Name of the spectral data argument in the
object constructor for |
w.length.var |
character Name of column containing wavelength data in nanometres |
idx.var |
character Name of column containing data to be copied unchanged to each spct object |
ncol |
integer Number of 'virtual' columns in data |
byrow |
logical If |
... |
additional named arguments passed to the member constructor function. |
Other Coercion methods for collections of spectra:
as.calibration_mspct(),
as.chroma_mspct(),
as.cps_mspct(),
as.filter_mspct(),
as.generic_mspct(),
as.object_mspct(),
as.raw_mspct(),
as.reflector_mspct(),
as.response_mspct(),
as.source_mspct(),
subset2mspct()
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