Jome,
On Aug 11, 2009, at 4:42 AM, Jome Akpoduado wrote:
Hello one more time Dane…
Looks like I’m on a roll here. Many thanks for the tips and insight
you gave me. I ran the url request below against the standalone
server at port 8000 like this … http://greenstreamsa.com:8000/wms.py?width=1024&height=768&styles=Plain&bgcolor=0xa0acb8&request=GetMap&version=1.1.1&format=image/png&layers=world&srs=EPSG:4326&EXCEPTIONS=application/vnd.ogc.se_inimage&bbox=-179,-58.8110470437,179,72.092336216
And I got an image! Not sure I’ve felt like this since high school.
MY curiousity’s heightening by the sec…
Cool, it looks like that errors out because the layer 'world' does not
exist in your mapfile. I'm not sure what the layer is called in your
mapfile so I changed it to grab all layers ('__all__'):
http://greenstreamsa.com:8000/wms.py?width=520&height=260&styles=&bgcolor=0xa0acb8&request=GetMap&version=1.1.1&format=image/png&layers=__all__&srs=EPSG:4326&EXCEPTIONS=application/vnd.ogc.se_inimage&bbox=-179,-58.8110470437,179,72.092336216
What I need to know now is this
1. How do I set the wms.py to accept the parameters the string
passes to generate the appropriate image.
It automatically accepts what the WMS spec allows. If you want to pass
custom parameters then you'll be needing to code that yourself.
At the moment my map factory is “linked” to an xml file and no
matter what I adjust in the request (the parameters) I still get the
same image.
Right, you determine the xml file that your server is able to serve by
changing the ogcserver.conf to point to a different map_factory.py.
Currently there is not support for reading in more than one xml mapfile.
2. How do I get the server to run without being “standalone”?
Just install mod_wsgi within apache and point it at the script you
created for the standalone server. mod_wsgi will look for the
'application' variable in the script and launch a long running process:
http://code.google.com/p/modwsgi/wiki/QuickConfigurationGuide
Anticipating your “great” answers!!!!
:D
Jome
From: Jome Akpoduado [mailto:[email protected]]
Sent: Tuesday, August 11, 2009 12:56 PM
To: 'Dane Springmeyer'
Cc: '[email protected]'
Subject: RE: [Mapnik-users] My WMS server is running.... what next?
Hello again Dane.
Looks like I got the standalone WSGI server working!!! Phew!!! Now
I know my installation works? What do I have to do for the server to
respond to requests like this?
http://greenstreamsa.com/wms.py?width=520&height=260&styles=Plain&bgcolor=0xa0acb8&request=GetMap&version=1.1.1&format=image/png&layers=world&srs=EPSG:4326&EXCEPTIONS=application/vnd.ogc.se_inimage&bbox=-179,-58.8110470437,179,72.092336216
Many Many thanks…
An excited newbie!!!!!
From: Dane Springmeyer [mailto:[email protected]]
Sent: Tuesday, August 11, 2009 6:15 AM
To: Jome Akpoduado
Cc: [email protected]
Subject: Re: [Mapnik-users] My WMS server is running.... what next?
Hello Jome,
Glad you are excited about getting started. Sounds like you've made
some great progress so far.
Sorry about the lack of step by step documentation for WMS. If you
continue to post places you get stuck we can surely provide tips as
you go along. You might also consider stopping by the #mapnik room
on irc.freenode.net.
As far as the problem you describe below: Can you say a bit more
about how you are making the Http request? What is the full URL/
Query String? Usually one would use a client like OpenLayers to
automatically create the request once the server is set up properly.
To confirm the server is set up you should simply be able to go to
the url where you have exposed it without providing any query string
and you'll get a welcome message like this:
http://wms.dbsgeo.com/
If you are not yet using the Firebug extension to Mozilla Firefox
that is a great way of debugging requests and responses, once you
start adding layer and other parameters.
Also, when I am configuring the WMS server I always first run in
'WSGI' Standalone mode so that I don't have to dig through apache
logs to figure out potential configuration problems. Using the
standalone WSGI setup as a development server launched in a terminal
process all errors simply print to the screen.
See: http://trac.mapnik.org/wiki/OgcServer#SampleConfigurations
Hope that helps. Feel free to shoot more questions as you have them.
Dane
On Aug 10, 2009, at 5:52 AM, Jome Akpoduado wrote:
Hello,
Please let me establish a baseline before I proceed. I got excited
about Mapnik when I saw what it could achieve via the Drupal WMS
client, Nice Map. I decided to build my own WMS server for my Drupal
websites and I think I’ve gotten way over my head on this. I’ve no
experience in python (but that has been fast changing in the last
few days) but I managed to get Mapnik installed on my server
(running Ubuntu 8.10) and followed the available tutorials on
creating first maps and I think I passed that hurdle so far.
However, where I get stumped is when I make an http request for a
map (much like what the Nice map Drupal module would do) and nothing
just happens.
I’ve searched and scoured through sites looking for any good
tutorials that could help an enthusiastic newbie like me get off the
ground with even the simplest of external map requests. Can anyone
help out or point me to good enough documentation that us mere
mortals can follow?
Many thanks.
_______________________________________________
Mapnik-users mailing list
[email protected]
https://lists.berlios.de/mailman/listinfo/mapnik-users
_______________________________________________
Mapnik-users mailing list
[email protected]
https://lists.berlios.de/mailman/listinfo/mapnik-users
