[Radiance-general] X 11 trouble with OS X

[Greg Ward]

Hi Dave,

Like Mark suggests, you may not have X11 installed (or running).  It  
is still an optional install on many versions of Mac OS X, but it's  
there under the Optional Installs of your system disk.  If you can't  
find it there, you can also download it from Apple's website.  There  
should be no need to compile it, but you will have to run it before  
starting rvu.

Best,
-Greg

> From: Dave Bosworth <dboz66 at earthlink.net>
> Date: February 20, 2008 4:41:01 PM PST
>
> Hello -
>
> I have been trying to get Radiance loaded to my OS X system (v.  
> 10.4.11).  I am new to UNIX, so the process has been a bit rocky -  
> but - makeall install and makeall library worked out (mostly) fine,  
> and I changed the /etc/profile file to include RAYPATH, and  
> everything seemed to be working fine.  Commands like genprism work  
> and the .oct file built OK.  However, when I went to run rview I  
> get this error:
>
> rview: cannot open X-windows; DISPLAY variable set?
> rview: fatal - cannot initialize x11
>
> I have tried setting DISPLAY=0 and no effect.  I even went so far  
> as to write this little ditty into  /etc/profile on  the advice of  
> a radiance-general user:
>
> if [ -z "${DISPLAY}" ];then echo -n
> export DISPLAY=':0'
> fi
>
> also, no luck.  So, now I am begging the wisdom of more advanced  
> users.
>
> any advice?
>
> thanks a million
>
> Dave