[Mapserver-users] Problem setting up direct URLs when using MapScript

[AMC Story]

Hi Lowell and Eric,

Thanks!!

Quoting Eric Bridger <eric at gomoos.org>:

> Most likely that is the issue.  We use something like:
> 
> my $randname = sprintf("%0.10d",rand(1000000000)) . ".png";
> 
> On Tue, 2003-07-22 at 16:23, AMC Story wrote:
> > Hi Lowell,
> > 
> > The source of the map image is: src="/tmp/map.png"
> > 
> > Is the problem then, that I need a unique id for each map created?
> > 
> > Thanks,
> > Ali
> > 
> > Quoting Lowell Filak <lfilak at medinaco.org>:
> > 
> > > What does the "<img src=..." part of the returned page look like?
> > > Lowell
> > > 
> > > The following message was sent by AMC Story <s9646183 at sms.ed.ac.uk>
> on
> > > Tue, 22 Jul 2003 15:03:48 +0100 (BST).
> > > 
> > > > Hi there,
> > > > 
> > > > My problem is that I've set up a user interface to my application
> > > using perl 
> > > > MapScript.  The script utilises a form that passes back variables
> > > such
> > > as the 
> > > > current map extents, previous map extents, mouse click locations,
> > > modes (ie. 
> > > > pan north, zoomin, previous extent etc), active layers and so on. 
> I
> > > then use 
> > > > MapScript to manipulate these variables, set the new extents and
> > > active layers 
> > > > accordingly and then redraw the map.  
> > > > 
> > > > So, the user is first presented with a screen that lists all the
> > > features of 
> > > > interest (i.e. all the point objects in my shapefile).  The user
> can
> > > then click 
> > > > on the url of each feature to go to the map interface page and see
> a
> > > map that 
> > > > is zoomed in to that point.  The user can also click on an image
> on
> > > the opening 
> > > > page which submits a form with the hidden variable "mode" set to
> > > "full_extent", 
> > > > so that they see the whole world map with all the features
> displayed.
> > > > 
> > > > The problem is, that when you click on the url (which looks like
> > > this...
> > > > <a
> > >
> href="http://file_path/script?lon=123.64&lat=-0.51&mode=each_feature">)
> > > the 
> > > > variables are passed and the script runs.  The script then works
> out
> > > the extent 
> > > > of the new map based on these variables and a new map should be
> > > created with 
> > > > this extent (ie the extents for $current_map are set to their
> zoomed
> > > in values, 
> > > > and then the $current_map->draw method draws the map).  However,
> to
> > > see the 
> > > > zoomed in map, you have to manually refresh the browser, or put in
> a
> > > line to 
> > > > the script which does this automatically for you.  Otherwise, the
> map
> > > is drawn 
> > > > as if the extent values haven't actually been changed from those
> in
> > > the map 
> > > > file.  Can anyone see why this might be the case?  I've printed
> out
> > > the extents 
> > > > of the map object just before it gets drawn, and they definately
> have
> > > been 
> > > > updated, but the map object that is drawn doesn't seem to reflect
> > > this..??
> > > > 
> > > > Sorry if this is a really long-winded e-mail ;)
> > > > 
> > > > Many thanks for any thoughts,
> > > > Ali
> > > > _______________________________________________
> > > > Mapserver-users mailing list
> > > > Mapserver-users at lists.gis.umn.edu
> > > > http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
> > > 
> > > 
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> > 
> 
> 
>