rspecdata
(required) a data frame, possibly an object of class rspec
that has wavelength range in the first column, named 'wl', and spectral measurements in the
remaining columns.
legpos
legend position control. Either a vector containing x
and y
coordinates
or a single keyword from the list: "bottomright"
, "bottom"
, "bottomleft"
,
"left"
, "topleft"
, "top"
, "topright"
, "right"
and "center"
.