[Radiance-general] error message "file coeff_perez.dat cannot be opened"

[Sotiris Papantoniou]

Hi again Thomas,

 

I used your commands and it seems to be working excellent now. Thank you
very much. 

 

While I was trying to figure this out by myself I found that if I run
"gendaylit" command from the folder I have extracted the 2 files before
copying them to radiance folder the command works properly. 

 

"Strange machines."

 

Have a good night from Greece and thank you once again.

 

Sotiris

 

From: Thomas Bleicher [mailto:tbleicher at googlemail.com] 
Sent: Wednesday, May 11, 2011 9:22 PM
To: Radiance general discussion
Subject: Re: [Radiance-general] error message "file coeff_perez.dat cannot
be opened"

 

2011/5/11 Sotiris Papantoniou <sotos.enveng at gmail.com>

Hi Thomas,

 

I am running Ubuntu 11.04 and I installed Radiance through Synaptic package
manager

 

So I suspect that you have installed the incomplete package.

 

I copied the "coeff_perez.dat" file but gendaylit again did not work because
it could not access "defangle.dat"

 

Yes. That too was mentioned in the post I pointed you to.  

 

I have now download the source code from the site but when I copy the file
to /usr/share/radiance the file has an "X" on the top  right of its image.

 

Can you be more specific, please. I assume you are neither familiar with a
Unix/Linux system nor the command line. I also assume that you have unpacked
the source package and copied the two files "coeff_perez.dat" and
"defangle.dat" to /usr/share/radiance.

 

Now, if you still get errors it might be related to the permissions of those
two files (which might be indicated by the "X" you are referring to). Open a
console window and type the commands

 

sudo chmod 644 /usr/share/radiance/coeff_perez.dat
/usr/share/radiance/defangle.dat 

sudo chown root:root /usr/share/radiance/coeff_perez.dat
/usr/share/radiance/defangle.dat   

 

After the first command you will have to provide your password to get the
required privileges.

 

With this your Radiance installation should be complete.

 

Regards,

Thomas

 

 

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