Subject: Re: [nmr_sparky] Slow contour drawing
From: Thomas Goddard
Date: Oct 24, 2006

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Hi,

Looking at 2900 peaks when the full spectrum is displayed cant
allow you to distinguish anything. Is the reason you look at the full
spectrum in order to navigate to the region you want? -- zoom all the
way out, then zoom in to the small region of interest?

On my 4 year old laptop running Linux (Redhat Enterprise 4) it takes
less than 1 second to draw contours of a 512 by 1024 regions of a 2-d
spectrum the second time. This is with 16 contour levels, contoured
above the noise level. Maybe the slowness you observe is because the
drawing of 2900 peak markers and assignment labels is slow. As a test
you could hide all labels using pa (select all peaks) and lB (hide labels).
You could also for testing purposes delete all peaks (dont save!).
I tried using contour levels deep in the noise and still it takes 2 or 3
seconds to redraw a 512 by 1024 region on this old machine.

When you get Cant open file s2lc. for printing, what file name are
you providing for saving the file?

Tom