[hyperSpec-help] Hyperspec, plot, and xlim, ylim - 2 questions

[Dr. Holger van Lishaut]

Dear all,

hyperspec objects do support plot() but appear to not support xlim=c()  
ylim=c().
Is this right? and if so, is there another way to set these limits?
I would like to plot an hyperspec object and add a second graph into the  
same coordinate system via "lines()", scaling the resulting plot.

Second question -
For lines(), I need the x-axis of the hyperspec object. When the hyperspec  
object contains several spectra, how do I access the nth ordinate?
Any suggestions?

Best regards
Holger