Hi Masako, You cannot measure distances on the VRML object directly in Chimera. However, you could use the Volume Path Tracer tool to place markers at the ends of the object, then measure the distance between the markers. Volume Path Tracer: http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/ volumepathtracer/framevolpath.html measuring distances: http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/ structuremeas/structuremeas.html#distances Or, for an indication of scale rather than a measurement, you could use the Scale Bar tool: http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/scalebar/ scalebar.html All these ways will show numbers based on the units of the VRML input. So you would need to know whether those units were angstroms, nanometers, or something else. I hope this helps, Elaine On Sep 7, 2006, at 6:11 PM, Masako Terada wrote:
Hi. I have a VRML file, which was created with different softwares. Is there anyway I can use Chimera to measure length of this tube-like structure?
Thanks, in advance! ---------------------------------------------------- Masako Terada
National Center for Microscopy and Imaging Research Center for Research in Biological Systems University of California, San Diego (858)534-7968 mterada@ncmir.ucsd.edu ----------------------------------------------------
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----- 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