Alberto,

This facility exists on Spectrgram. Perhaps you can e-mail Richard Horne and
see what he did.

Mike, G3XDV
==========

I am implementing both in Argo and Spectran a function that will
display the relative level (in dB) of the spectral lines when you hover

the

mouse cursor over them. So far so good.
What I am uncertain about, is that word, 'relative'. Relative to what ?