- ChimeraX-users - RBVI Mailing Lists

version 0.7
by jingdong cheng 21 Dec '18

21 Dec '18

Hello, Could you provide me the older version 0.7? I tried the new 0.8, it is good, fixed a lot of bugs, but it runs super slow slow. It is better to change back to 0.7, but on your website I can’t find it anymore. Cheers! Merry Christmas! Jingdong

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FW: hi
by Williams, Joanne 21 Dec '18

21 Dec '18

From: mosbah amine <aminemosbah(a)hotmail.com> Date: Thursday, December 20, 2018 at 11:24 AM To: "chimerax(a)cgl.ucsf.edu" <chimerax(a)cgl.ucsf.edu> Subject: hi dear colleague trying to download chimiraX , no way to get to the right page !!! would you please send me the zip file , i agrre to licesing requarements also i have a windows10 for compatibility regards Dr mosbah amine TN

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scale bar in chimerax
by Xu Jingwei 13 Dec '18

13 Dec '18

Hi, I recently installed the ChimeraX in my centos 7 and it is really powerful software to make beautiful figures. I really like it! However, one question before I setup for figures is how could I make a scale bar in ChimeraX? I did not find the relative information in the web. Could you please help me about that? I am really appreciated for that. Best, Jingwei ETH Zürich Dr. Jingwei Xu Postdoc Institute of Molecular Biology & Biophysics Department of Biology HPK D17 Otto-Stern-Weg 5 8093 Zürich, Switzerland

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Dual GPU VR support
by Lewandowski, Jozef 11 Dec '18

11 Dec '18

Hi, A quick question. Does implementation of VR in ChimeraX support dual GPU? Or dual GPU would give no advantage? Thanks, Józef

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transparentBackground doesn't seems to work on save
by Yehuda Halfon 09 Dec '18

09 Dec '18

Hi all, We are trying to save an image without a background using save image filename format png transparentBackground true but we get the error: transparentBackground expected key word. What are we doing wrong? Thanks, Yehuda Halfon

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Incrementing value in perframe
by Scott, Brandon L. 09 Nov '18

09 Nov '18

I am attempting to use the measure convexity on each frame, and seem to have a mismatch between the frame number which goes from [0 - (N-1)] and the volume child which goes from [1 - N]. Is there a way to augment the $1 value to be $1+1? Attached are the command calls. This displays the convexity properly on the called frame: vseries play #1 jumpTo 1; measure convexity #1.2 smoothingIterations 12 palette cyan-gray-maroon range -1,1; The does not display it because of the mismatch: movie record; perframe "vseries play #1 jumpTo $1; measure convexity #1.$1 smoothingIterations 12 palette cyan-gray-maroon range -1,1;" range 1,200; wait 200; movie encode C:\Users\LLSM\Desktop\Convexity.mp4 quality highest framerate 25 Thanks in advance. -Brandon ____________________ Brandon Scott, PhD SDSMT, Nanoscience

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Render images in nogui mode
by Lukas Pravda 07 Nov '18

07 Nov '18

Hi all, I was wondering if there is a way how to generate images from linux terminal. I’ve come across a couple of very old posts in the mailing list stating that this was not possible at that time. So, I wonder if anything has changed. If I use cif files only, chimerax gives “Unable to render images to save them” message. If I try to include volumetric data from cryo-EM overlaid on the structure I get an exception during opening a *.map file. Please see the script below. The exception is in the attachment Best, Lukas open emd_8909.map volume #1 color white transparency 0.7 level 0.1 step 1 zoom 1.2 open 6ds5.cif set bgColor white hide selAtoms show selAtoms ribbons color bychain ribbons light full light shadow true save image default.png width 1600 height 1600 supersample 5 transparentBackground true turn y 90 save image y.png width 1600 height 1600 supersample 5 transparentBackground true turn z 90 save image z.png width 1600 height 1600 supersample 5 transparentBackground true

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chimeraX questions on representation
by Dr. Eddie 16 Oct '18

16 Oct '18

Hi, I have a few small n00b questions that would really help me along. 1) How do I change the "ball scale" property in chimeraX using a command for the sphere representation? 2) When I do "select protein" (which is represented as a cartoon) it highlights it but clicking on any of the buttons to change the representation does nothing. I need to click first on the show atoms and then I can click on those but many of the H are not connected (for LYS I have two white dots floating above the carbon with no bond to them, but a bond to other C's and it is only for one CH3 group, the other is fine). This is true in all three representations. How do I fix this? 3) Can I increase the resolution in VR? 4) After clocking on the label tool with a VIVE controller and using it, how to I change it back to the original mode so I can scale the model (using both triggers)? Thank you very much for your help! Eddie

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Re: [chimerax-users] chimeraX questions on representation
by Eric Pettersen 16 Oct '18

16 Oct '18

Hi Eddie, ChimeraX (and Chimera for that matter) connect atoms in standard residues using a connectivity template. Therefore the atoms have to have standard names. Some hydrogens in your file don’t have their PDB-standard names, and therefore wind up unconnected. I have committed a fix for this — if there are unconnected hydrogens after the template pass then Chimera(X) does an additional connect-by-distance pass. A second problem with the file is that it uses ATOM records for everything, including solvent, ions, and the lipid bilayer. ATOM records are for polymeric residues and imply connectivity between consecutive residues with the same chain ID. Therefore the non polymeric components of the file should have been using HETATM records. I have attached an edited version of your file with appropriate HETATM records. It should work much better in tomorrow’s fixed build. —Eric > On Oct 16, 2018, at 11:31 AM, Dr. Eddie <eackad(a)gmail.com> wrote: > > Thanks for the help! As for the pdb, I've attached it. It shows fine in vmd and pymol. > Thanks, > Eddie > > On Tue, Oct 16, 2018 at 1:19 PM Eric Pettersen <pett(a)cgl.ucsf.edu <mailto:pett@cgl.ucsf.edu>> wrote: >> On Oct 15, 2018, at 8:35 PM, Elaine Meng <meng(a)cgl.ucsf.edu <mailto:meng@cgl.ucsf.edu>> wrote: >> >> I don’t know why your H’s are disconnected specifically, but it’s almost surely some issue with the input file. > > If you provided the input file, we might be able to offer advice on how to get ChimeraX to handle it better. One thing you might try sight unseen is to remove the LINK/CONECT records in the file (assuming it’s a PDB file). > > —Eric > > Eric Pettersen > UCSF Computer Graphics Lab > > > > > > > -- > Eddie > <popc.3a4.ionf.pdb>

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Question about measuring the distance of helix axis
by ze li 16 Oct '18

16 Oct '18

Dear ChimeraX supporting team: I try to measure the distance between two helix axises, but in the "distance" command there is only atom-to-atom usage in Chimera X. Is there any command and plugin for this function, such as in Chimera? Thank you. Best,

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