[Radiance-general] Problem whith file.oct

[Lars O. Grobe]

Hi Imène,

I would propose to have a look at Axel's unix tutorial for Radiance 
users. You can append directories to the PATH (or RAYPATH) variable 
using colons, in bash, the syntax would be:

export RAYPATH=$RAYPATH:newsubdir:anothersubdir:currentdir

What happens is that the variable RAYPATH (left hand) is set to the 
string on the right hand. That string is consisting of the current 
content of RAYPATH (that is why you place the $ at its beginning) plus 
the remaining line. The colon is used as a separator for directories.

The syntax is the same as for other environment variables. The most 
popular example would be the PATH variable, which is the search 
directory for executable (program) files.

Environment variables are kept while you keep a session, e.g. a terminal 
window, open. If you want the changes to be permament, you can use your 
shell's configuration file. For bash, that would be e.g. .bashrc (a 
hidden file in your home directory). I tend to set the RAYPATH at the 
beginning of a simple script, which than calls rad. There are many 
options, again Axel's tutorial is probably a good starting point.

Cheers, Lars.
> Hi Lars,
> I'm a beginner about radiance software. Can you please tell me more how can I add for example subdirectory called objects to RAYPATH and when should i do this? in which step of my work?
> Cheers
> Imène