Hi Qiao Xue, Your command looks OK to me, but are you sure that the dx file is model #0? Check in the Model Panel (open from Favorites menu) that it is really model #0. If you have other things open at the same time, like the atomic structure, it could be #1, #2, etc. instead and you should change the model number in the command. Other than that, my only other idea is that the dx file is empty or the wrong format. I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco
On Dec 5, 2018, at 11:52 PM, xmgign@126.com wrote:
Hi I want to make the electric fieldline but there are always some problems. I did this as follows, 1. run add charge to the system 2. run APBS, the I get the electrostatic surface and a file named 1.dx 3. open 1.dx 4.measure fieldLines #0 lines 500 startAbove 10 color pink linewidth 2 then I get the problem : no volume specified
I have check the userguide of measure fieldlines, but there is nothing about the volume. measure fieldLines map-model(s) [ lines N ] [ startAbove cutoff ] [ step s ] [ modelId model-number ] [ color line-color ] [ lineWidth width ] [ tubeRadius radius ] [ circleSubdivisions M ] [ markers true|false ]
what should I do next? Thanks. Qiao Xue