Hi Pranav, ChimeraX does not yet have color-key drawing, sorry. One possibility for now is that even if you want to make the main image in ChimeraX, you could still make the color key separately in Chimera and then combine them in some image-editing program like Photoshop.

In Chimera, you could use the “colorkey” command as Ibrahim suggests, or the GUI (Tools… Utilities… Color Key). Either way you would have to define the colors and set values “manually” to match the coloring in ChimeraX, so we understand it is not as convenient as when the image and key are in the same program. http://www.rbvi.ucsf.edu/chimera/docs/ContributedSoftware/2dlabels/2dlabels.html#colorkey

There is also a ChimeraX e-mail list chimerax-users@cgl.ucsf.edu that you can use if you have other issues/questions about ChimeraX specifically.

Best, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco

On Mar 18, 2019, at 12:13 PM, Moustafa, Ibrahim M. ria2@psu.edu wrote:

Hi Pranav,

Not sure about ChimeraX but in Chimera you can use 'colorkey' command line:

colorkey x1,y1 x2,y2 value1 color1 value2 color2....

example: colorkey 0.1,0.1 0.11,0.5 3.0 blue 4.0 cyan 5.0 green 6.0 yellow 7.0 orange 8.0 red

You can use the colors and their values from the output of local resolution map.

Ibrahim From: Chimera-users chimera-users-bounces@cgl.ucsf.edu on behalf of Pranav Shah p.shah.lab@gmail.com Sent: Monday, March 18, 2019 2:56 PM To: chimera-users@cgl.ucsf.edu BB Subject: [Chimera-users] color key in chimera X

Hi, I have a isosurface rendering that I have colored by radius as well as local resolution. I want to now place a colour key in the image to indicate the relevance of the colors. Is there a way to achieve this in ChimeraX? If not, is there a way to easily port the commands to Chimera?

Cheers, Pranav -- Pranav Shah Postdoctoral Research Fellow.