When overlaying multiple 2D NMR spectra, one needs to supply a vector of contour levels for each spectrum, as a list.
This is a convenience function which takes a set of levels and copies it into a list, ready for
use with plotSpectra2D
.
LofL(lvls, n)
A list of length n
; each entry is a copy of lvls
.
plotSpectra2D
for an example.