[Chimera-users] how to draw lines in Chimera

[Elaine Meng]

On Jun 24, 2008, at 4:24 PM, Qing Xie wrote:
> Hi,
>  I'm trying to draw a bunch of axes from center (0,0,0). I could do  
> this
> in 'O' by calling this macro:
>
> begin_object symax
> colour blue
> stick_xyz  139.05,   -0.00,  -16.25, -139.05,    0.00,   16.25, 0.25
> stick_xyz -111.40,   43.12,   73.02,  111.40,  -43.12,  -73.02, 0.25
> stick_xyz -107.48,   80.74,   39.10,  107.48,  -80.74,  -39.10, 0.25
> stick_xyz  -66.72,  119.11,  -31.00,   66.72, -119.11,   31.00, 0.25
> stick_xyz   50.41,   73.78, -107.77,  -50.41,  -73.78,  107.77, 0.25
> stick_xyz  100.65,    0.20,  -97.31, -100.65,   -0.20,   97.31, 0.25
> stick_xyz  -68.88,  113.16,   45.26,   68.88, -113.16,  -45.26, 0.25
> stick_xyz  -39.02,   80.98, -107.34,   39.02,  -80.98,  107.34, 0.25
> stick_xyz   10.15,    0.20, -139.64,  -10.15,   -0.20,  139.64, 0.25
> stick_xyz   50.47,  -73.42, -108.00,  -50.47,   73.42,  108.00, 0.25
> end_object symax
>
> Since I had to use some features in Chimera, do you know what  
> commands I
> should combine to do similar things above?
> Thank you!
> Sincerely,
> Qing


Hi Qing,
You can make a BILD file defining the objects, for example containing  
the following:

.color medium blue
.cylinder  139.05   -0.00  -16.25 -139.05    0.00   16.25 1
.cylinder -111.40   43.12   73.02  111.40  -43.12  -73.02 1
.cylinder -107.48   80.74   39.10  107.48  -80.74  -39.10 1
.cylinder  -66.72  119.11  -31.00   66.72 -119.11   31.00 1
.cylinder   50.41   73.78 -107.77  -50.41  -73.78  107.77 1
.cylinder  100.65    0.20  -97.31 -100.65   -0.20   97.31 1
.cylinder  -68.88  113.16   45.26   68.88 -113.16  -45.26 1
.cylinder  -39.02   80.98 -107.34   39.02  -80.98  107.34 1
.cylinder   10.15    0.20 -139.64  -10.15   -0.20  139.64 1
.cylinder   50.47  -73.42 -108.00  -50.47   73.42  108.00 1

and open it in Chimera to create the objects.  I also attached this  
below as the file sticks.bild to be opened directly in Chimera.  I  
didn't think 0.25 looked that good, but you can edit the file to  
whatever radius (and color, etc.) that you want.

The BILD language also includes many other objects:
http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/bild.html

Best,
Elaine
-----
Elaine C. Meng, Ph.D.                          meng at 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

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