[Mapserver-users] cant label streets in mapscript -- please help

Wed Nov 12 09:47:35 EST 2003

Thank you Mr.Morissette,
You were right, today I installed mapserver4.0 according to the wiki and
with minor difficulties I did it. (curl did not get compiled, took me some
time to figure out that it had some thing to do with ssl, so I did
"./configure --without-ssl")

Then my little labelling test code worked:) Thanks a lot...

Have a nice day.

Murat Isik

----- Original Message -----
From: "Daniel Morissette" <morissette at dmsolutions.ca>
To: "Murat Isik" <muratisik at megatek.com.tr>
Cc: <mapserver-users at lists.gis.umn.edu>
Sent: Wednesday, November 12, 2003 1:28 AM
Subject: Re: [Mapserver-users] cant label streets in mapscript -- please
help

> Murat Isik wrote:
> >
> > As for the "stopped rendering", the web page only has the part that is
until
> > the start of the php code, like the title or the logo gif. The source of
the
> > web page only has the page title and the url of the page logo. When I
check
> > the temporary folder into which images are written, I see no images are
> > produced. On the web page, there were no error messages. Unfortunately,
I
> > dont know how to use the error_log :(
> >
>
> The Apache error_log is located in /var/log/httpd/error_log.  You can
> monitor it using the following command in a shell window:
>
>    tail -f /var/log/httpd/error_log
>
> Then run the PHP script again and see if anything is sent to the
> error_log that could help figuring the source of the problem.
>
>
> > The lines I added to the mapfile for mapscript choose the streets by
their
> > value in the second column which is ID (numeric) and I choose all by /./
> >
> > CLASSITEM 'ID'
> >   CLASS
> >        EXPRESSION /./
> >   COLOR 66 34 249
> >   END
> >
>
> Makes sense.  All streets end up being caught by the first class and
> none are sent to the second class that contains the label definition.
> That's why it draws with no error but you don't get labels either: the
> label stuff is never used.
>
>
> > I applied your test with the following php code:
> >
> > <HEAD>
> > <TITLE>TEST</TITLE>
> > </HEAD>
> > <CENTER>
> > <?php
> >     dl("php_mapscript.so");
> >     $map =  ms_newMapObj("demonew.map");
> >     $img = $map->draw();
> >   #  $map->drawLabelCache($img);
> >     $url = $img->saveWebImage(GIF,1,1,0);
> >
> > ?>
> > <INPUT TYPE="image" SRC="<?php echo $url; ?>">
> >
> > Once again, the web page displays no images, no images produced in temp
> > directory and web page source ends at <CENTER>. Also tried it with
> > drawLabelCache on, getting the same result :(
> >
>
> It seems clear that php_mapscript crashes (segmentation fault) during
> the $map->draw() call then.
>
> First let's see if you'll get any hints about the source of the problem
> in the error_log, and if not then I think there are 75% chances that you
> are running conflicting versions of GD/freetype between your PHP and
> php_mapscript.so.  You can check if your PHP includes GD/freetype by
> running the phpinfo() command in a script and looking for GD/freetype
> stuff in the list of modules.  If you possible try to disable the PHP
> GD/freetype stuff.
>
> If that's not a GD/freetype conflict then it could be a bug somewhere in
> MapServer, and the only way to figure it would be to run in a debugger
> and you can't do that with the RPM version.  Anyway that's getting quite
> involved if you are a beginner so I would suggest instead uninstalling
> the RPMs and installing MapServer v4.0 using the instructions that you
> can find in the wiki at:
>
> http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?RedHat9AndMapserver40
>
> If the crash persists with version 4.0 then your best bet would be to
> package a small testcase that reproduces the problem with mapfile and
> sample data and submit a bug in the MapServer bugzilla.
>
> Lots to learn, eh?   :)
>
> Daniel
> --
> ------------------------------------------------------------
>   Daniel Morissette               morissette at dmsolutions.ca
>   DM Solutions Group              http://www.dmsolutions.ca/
> ------------------------------------------------------------