Hi Lu, You are the third person I know of to experience this behavior. Unfortunately, none of the machines in our lab exhibit the behavior (nor any machines running Chimera at UCSF, AFAIK). Can you tell me what machine and OS you are using, and what release of Chimera? You could also provide a sample problem image; it might be of help. In at least one case, turning off supersampling eliminated the streaks/lines across the image. Of course, the image will look a little worse since edges won't be as smooth as when supersampling is on, but it may well still be good enough. You turn off supersampling by using the "Image Setup" button on the image save panel and changing the supersampling setting to "1x1". You would also want to make your Chimera window as large as possible to try to get the best resolution you can to somewhat offset the loss of supersampling. Eric Pettersen UCSF Computer Graphics Lab On Oct 10, 2004, at 4:35 PM, Lu wrote:

Hello, I've been using Chimera to generate beautiful images of entire virus particle from an O-style map file. However, most of the images that I capture have a few black streaks in the image. The streaks appear as thin, parallel lines, like someone dragged a pen across a painting before it dried. Does anyone know how I can remove these streaks without having to resort to Photoshop? I can provide sample images too. Thanks in advance!

-Lu Gan

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