[LON-CAPA-admin] Dynamic Plots on Debian

[Todd Ruskell]

Guy,

I am making progress on this. . .

I did the below, restarted both loncontrol and httpd.  Now I get this
when I try to view the image separately:

The image
"http://poisson.mines.edu/cgi-bin/plot.gif?file=truskell_csmTodd_1056580683_2786645_plot.data&output=gif" cannot be displayed, because it contains errors.

Any more ideas?  I'd be happy to send you the perl script in plot.gif if
you think it'd help.

Thanks,

Todd




On Wed, 2003-06-25 at 12:25, Guy Albertelli II wrote:
> Hi Todd,
> 
> > One problem I've run into is that dynamically generated plots don't seem
> > to get generated/stored properly for me.  I just get the little broken
> > image icon, and when I right-click on the image and try to view or
> > download it, not surprisingly I get a Not Found error:
> > 
> > The requested URL /cgi-bin/plot.gif was not found on this server.
> > 
> > So I went poking for cgi-bin, and found one here:  /home/httpd/cgi-bin,
> > as I think I expect.  However, it seems to have the following access
> > privileges:
> 
> What is in you httpd.conf for the  ScriptAlias?
> 
> It should either not be set in there (and thus use the value
> loncapa_apache.conf sets) or set to
> 
> ScriptAlias /cgi-bin/ "/home/httpd/cgi-bin/"
> 
> 
> It that is correct, can you look for error messages in
> /var/log/apache/error.log  that mention plot.gif?
> 
> 
> It most likely would be complaining about not being able to generate
> gifs.
> 
> The easiest solution to solve this is likely (as root):
> 
> 1) apt-get remove libgd-dev gnuplot
> 2) apt-get install libgd-gif1 libgd-gif1-dev
> 3) wget http://aleron.dl.sourceforge.net/sourceforge/gnuplot/gnuplot-3.7.3.tar.gz
> 4) tar xzvf gnuplot-3.7.3.tar.gz
> 5) cd gnuplot-3.7.3
> 6) ./configure --with-gd
> 7) make
> 8) make install
> 
> 
> -- 
> guy at albertelli.com  LON-CAPA Developer  0-7-6-7-
> _______________________________________________
> LON-CAPA-admin mailing list
> LON-CAPA-admin at mail.lon-capa.org
> http://mail.lon-capa.org/mailman/listinfo/lon-capa-admin
>