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Hello, I tried to re-create this by opening up 20 3D spectra (each about 32 Mb, so not that huge I guess), and having a couple of windows and strips, but it seems to be behaving itself for me. But this sounds like some kind of Tk double buffering screw up (so it is splatting a blank page after the fact, rather than, or perhaps for some obscure reason in addition to at the beginning of the draw), which presumably manifests itself if the drawing is taking too long or something. I forget, are you on Linux and if so which variant? And is this in Tk (rather than OpenGL) drawing mode? Wayne On Wed, 4 Apr 2012, Fowler, Andrew wrote: > I have a titration with 11 total 1H-15N HSQC spectra. I've got the spectra > imported/overlaid in Analysis 2.1.5, updated last week. Spectra were > converted with pipe2azara, and I've made contour files. All are peak > picked, and I'm trying to propagate assignments prior to extracting Kd > with "follow shift changes". This is a "clean" project with no other > spectra in it. > > Now the problem: any time I zoom, move, or otherwise change the display, > all 11 spectra and associated peak markers draw/update pretty much as > expected. As soon as they finish drawing, or perhaps as soon as I so much > a breathe on my mouse, everything on the canvas blanks. If I remember > where things are, I can blindly draw a box around a shifting resonance, > which redraws and re-blanks, and propagate the assignments. For the > peripheral peaks, this is very annoying, but I have a handful of places > where there is significant overlap and do need to see what I'm doing. > > I tried zooming in on only 2 or 3 peaks, but that only slightly speeds up > the display problem. If I turn off the display for several spectra, things > seem to behave normally - I'm not sure what the magic number is, but it's > less than 10. > > Any suggestions? I'd prefer not to have to propagate every assignment 2 or > more times. I've allocated a full gig of RAM to Analysis on startup, so I > shouldn't be hitting bit problems there. > > I've seen similar things happen temporarily with some large 3D spectra > (C13-NOESY/HCCH-TOCSY), but those are usually ok after a redraw. Quitting > and restarting makes no difference. > > Cheers, > Andrew > > > > ________________________________ > Notice: This UI Health Care e-mail (including attachments) is covered by the Electronic Communications Privacy Act, 18 U.S.C. 2510-2521, is confidential and may be legally privileged. If you are not the intended recipient, you are hereby notified that any retention, dissemination, distribution, or copying of this communication is strictly prohibited. Please reply to the sender that you have received the message in error, then delete it. Thank you. > ________________________________ >