Return a copy of an R object with its class set to a given type of spectrum.
Usage
as.generic_mspct(x, ...)
# Default S3 method
as.generic_mspct(x, ...)
# S3 method for class 'data.frame'
as.generic_mspct(x, force.spct.class = FALSE, ...)
# S3 method for class 'generic_spct'
as.generic_mspct(x, force.spct.class = FALSE, ...)
# S3 method for class 'list'
as.generic_mspct(x, force.spct.class = FALSE, ..., ncol = 1, byrow = FALSE)
# S3 method for class 'matrix'
as.generic_mspct(
x,
w.length,
member.class,
spct.data.var,
multiplier = 1,
byrow = NULL,
spct.names = "spct_",
...
)
mat2mspct(
x,
w.length,
member.class,
spct.data.var,
multiplier = 1,
byrow = NULL,
spct.names = "spct_",
...
)
Arguments
- x
a list of spectral objects or a list of objects such as data frames that can be converted into spectral objects.
- ...
passed to individual spectrum object constructor
- force.spct.class
logical indicating whether to change the class of members to
generic_spct
or retain the existing class.- ncol
integer Number of 'virtual' columns in data
- byrow
logical If
ncol > 1
how to read in the data- w.length
numeric A vector of wavelengthvalues sorted in strictly ascending order (nm).
- member.class
character The name of the class of the individual spectra to be constructed.
- spct.data.var
character The name of the variable that will contain the spectral data. This indicates what physical quantity is stored in the matrix and the units of expression used.
- multiplier
numeric A multiplier to be applied to the values in
x
to do unit or scale conversion.- spct.names
character Vector of names to be assigned to collection members, either of length 1, or with length equal to the number of spectra.
Methods (by class)
as.generic_mspct(default)
:as.generic_mspct(data.frame)
:as.generic_mspct(generic_spct)
:as.generic_mspct(list)
:as.generic_mspct(matrix)
:
Note
Members of generic_mspct
objects can be heterogeneous: they can
belong to any class derived from generic_spct
and class is not
enforced. When x
is a list of data frames force.spct.class =
TRUE
needs to be supplied. When x
is a square matrix an explicit
argument is needed for byrow
to indicate how data in x
should
be read. In every case the length of the w.length
vector must match
one of the dimensions of x
.
See also
Other Coercion methods for collections of spectra:
as.calibration_mspct()
,
as.chroma_mspct()
,
as.cps_mspct()
,
as.filter_mspct()
,
as.object_mspct()
,
as.raw_mspct()
,
as.reflector_mspct()
,
as.response_mspct()
,
as.solute_mspct()
,
as.source_mspct()
,
split2mspct()
,
subset2mspct()