Hi Stephen, A recent addition to Chimera (version 1.2184 and later) is that it can read BILD format, a very simple text format for specifying lines, arrows, spheres, boxes, cones, and cylinders. This sounds like what you are looking for. The format description can be viewed at: http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/bild.html In release 1.2184 and snapshot 1.2186, there is a problem with transformations (translate, rotate, and scale commands in this format), but that is fixed in our working version, and thus in future releases. It sounds like you may not want to use transformations anyway, just use the coordinate system of your protein. I've attached an example file that does not include any transformations. This file can simply be opened in Chimera, for example with File... Open. Best, Elaine On Nov 18, 2005, at 10:48 AM, Stephen A. Smith wrote:
Hi I want to create a cube (box; 1Å^3, 2Å^3, etc.) at specific grid points and color them as needed. Is this possible in Chimera? It is easy to do with spheres by specifying an atom at the desired location and then defining its VDW radius. I would like to create cubes and rectangles of various sizes, related to regions of my protein, to denote specific atomic / residue features. Any help would be greatly appreciated. Thanks Steve
----- Elaine C. Meng, Ph.D. meng@cgl.ucsf.edu UCSF Computer Graphics Lab and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco http://www.cgl.ucsf.edu/home/meng/index.html