fshift_spct {photobiology} | R Documentation |
fshift a spectrum
Description
This function returns a spectral object of the same class as the one supplied as argument but with the spectral data expressed on a zero-shifted scale.
Usage
fshift_spct(spct, range, col.names, f, ...)
Arguments
spct |
generic_spct The spectrum to be normalized |
range |
an R object on which range() returns a vector of length 2, with min and max wavelengths (nm) |
col.names |
character The name of the variable to shift with respect to zero. |
f |
function A summary function to be applied to |
... |
other arguments passed to f() |
Details
This private function is used internally to implement the
hshift()
methods that are exported.
Value
a new object of the same class as spct
.
[Package photobiology version 0.11.3 Index]