[Radiance-general] Use Python to execute Radiance command

[Ji Zhang]

Thank you very much for your advice, Greg! It works.

May I ask whether specifying the '&' option for rad command to make it run
in background can be applied in similar way to other Radiance command such
as rpict, rtrace, etc to make them run in background as well?

Thanks again!

- Cheers, Ji


On Mon, Jun 20, 2011 at 12:58 AM, Greg Ward <gregoryjward at gmail.com> wrote:

> Can't you just add an ampersand ('&') to the end of your rad command to run
> it in the background?
>
> -Greg
>
> *From: *Ji Zhang <hope.zh at gmail.com>
>
> *Date: *June 19, 2011 5:48:30 AM PDT
>
> *
> *
>
> Dear Radiance experts,
>
> Suppose you want to use Python to call rad command and render an image
> using the following script:
>
> ################################
> import os
> rad_command = "rad -e -v vw1 /test.rif"
> os.system(rad_command)
> ################################
>
> Python will hang there until the rad command running in background is
> finished. During this period, you can do nothing in the Python Shell...
>
> So, is there a way to use Python to call the Terminal and "paste" the rad
> command string into the Terminal and then run rad? In this way, Python is
> freed from the rad rendering process once it's be activated in the Terminal.
>
>
> Appreciate your advices!
>
> (using Mac OS 10.6.7, Radiance 4, and Python 2.6.5)
>
> Ji
>
>
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