Function to set by reference the "multiple.wl" attribute of an existing generic_spct or an object of a class derived from generic_spct.
setMultipleWl(x, multiple.wl = NULL)
a generic_spct object
numeric >= 1 If multiple.wl
is NULL
, the
default, the attribute is not modified if it is already present and valid,
and set to 1 otherwise.
x
Other multiple.wl attribute functions:
getMultipleWl()