[pmwiki-users] pmgraphviz problem: No Image on Web Page?

[Patrick R. Michaud]

On Wed, Aug 08, 2007 at 02:42:06PM -0500, Prasad Burra wrote:
> out of curiosity , I replaced again to
> $PmGraphVizCacheDirUrl = "$FarmD/pub/pmgraphviz";  // this should
> work...but no!!

It shouldn't work, because $FarmD is a filesystem directory path,
not a url.

Pm



> On 8/8/07, Patrick R. Michaud <pmichaud at pobox.com> wrote:
> > On Wed, Aug 08, 2007 at 11:53:39AM -0500, Prasad Burra wrote:
> > > Hi ,
> > > can some body help me out with this problem.
> > > I installed pmgraphviz.php
> > > I installed on the server graphviz. Its running perfectly..I
> > > tested..its generating the files.
> > >
> > > and I edited the config.php and pasted the lines
> > >
> > > $PmGraphVizCacheDir = "$FarmD/pub/pmgraphviz";
> > > $PmGraphVizDotPgm = "/home/parisodh/bin/bin/dot";
> > > $PmGraphVizCacheDirUrl = "$FarmPubUrl/pmgraphviz";
> > > $PmGraphVizConvertPgm = "/usr/bin/convert";
> > >
> > > [...]
> > > I forgot to mention that, the image is being saved in the
> > > $FarmD/pub/pmgraphviz directory..but , just that its not being
> > > displayed on the web page??
> > >
> > > what could be the problem ?
> >
> > If the image is being generated but not displayed, the problem
> > is almost certainly with the $PmGraphVizCacheDirUrl setting
> > somehow.
> >
> > In this case, I suspect you meant to use $FarmPubDirUrl instead
> > of $FarmPubUrl, since PmWiki doesn't have a $FarmPubUrl:
> >
> >    $PmGraphVizCacheDirUrl = "$FarmPubDirUrl/pmgraphviz";
> >
> > But more than that, if you're using $FarmPubDirUrl you need
> > to make sure it is initialized before you use it.  PmWiki doesn't
> > set a value for $FarmPubDirUrl until after configuration files
> > have been loaded.
> >
> > Even better, if you aren't using farms, then just leave these
> > variables unset so that you get the default values.
> >
> > Pm
> >
> > P.S.:  Yes, it appears that the documentation inside of pmgraphviz.php
> > is incorrect and specifies $FarmPubUrl instead of $FarmPubDirUrl.
> >