FWHM in ISIS

[Keith Graham]

Hi,

I wrote this message erroneously to another forum in spectro-aras, but I do believe this is the one that ismore fitting.

I am trying to determine the FWHM and SNR using the line profile in ISIS. With the profile on the screen I select the FWHM button from the list on the right side of the screen. The box Line Profile and Continuum appears with all boxes showing 00. I cannot get any further than this so that values are showing in the boxes. What am I missing?
Thanks,
Keith

[Robin Leadbeater]

Double left click either end of the region of interest