Read .Rda files as saved during data acquisition and build a collection with the spectra read, possibly first trimming the range of wavelengths and/or smoothing the spectral data.
Usage
collect_spct_files(
path = ".",
range = NULL,
method = NULL,
strength = 0,
name.root = "",
na.rm = FALSE
)Arguments
- path
a character string giving the name of the folder from wich to load .Rda files containing spectra.
- range
a numeric vector of length two, or any other object for which function range() will return two.
- method
a character vector of length 1 or 2, containing the smoothing method to use, one of "custom", "lowess", or "supsmu".
- strength
numeric value to adjust the degree of smoothing.
- name.root
character string to prepend to the name of the spectra in the collection.
- na.rm
a logical value indicating whether NA values should be stripped before the computation proceeds.
Note
If the argument passed to method is of length 2, the first
member will apply to source_spct objects and the second one to
filter_spct and reflector_spct objects. A numeric vector
of length 2 passed to strength is treated in the same way. This
is only relevant when we are collecting spectra belonging to different
classes and need to treat them differently with respect to smoohting. It
also allows different defaults, as transmittance spectra tend to lack
the fine structure of some emission spectra.
See also
Function trim_wl is used to trim the
range of the data to plot, and function
smooth_spct is used for smoothing, and
prameters range, and strength and method are passed to
them, respectively.
Other functions for importing spectral data from files:
map_oofile_header_rows(),
oofile_data_rows(),
plot_spct_file(),
read_files2mspct(),
read_oo_data(),
read_oo_ovdata(),
read_oo_pidata(),
read_oo_ssdata(),
set_oo_ssdata_descriptor(),
set_oo_ssdata_settings()