[mapguide-users] RE: MgTileService - GetTile -
Cannotestablishconnection [No Viruses detected]
Tom Chadwin
tom.chadwin at nnpa.org.uk
Wed Jan 31 04:24:38 EST 2007
As I mentioned before, I would strongly request print-res DPI facility
for print layouts.
Cheers
Tom
________________________________
From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Andy
Morsell
Sent: 31 January 2007 00:21
To: 'MapGuide Users Mail List'
Subject: RE: [mapguide-users] RE: MgTileService - GetTile -
Cannotestablishconnection [No Viruses detected]
Originally I was thinking for viewing higher resolution tiles or
generated images but now realize that wouldn't help since screen
resolution is 96 dpi. But, yes, for printing purposes it could be
handy. I guess if the option is available in the mapagent operation, it
seems like it would make sense that it would also be available directly
in the API if possible.
Andy
________________________________
From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Traian
Stanev
Sent: Tuesday, January 30, 2007 4:00 PM
To: MapGuide Users Mail List
Subject: RE: [mapguide-users] RE: MgTileService - GetTile -
Cannotestablishconnection
Are you hoping to generate rasters at higher dpi for printing purposes?
Traian
Tom Chadwin
ICT & Web Development Officer
Telephone: 01434 611530
Mobile:
Fax: 01434 611677
Email: tom.chadwin at nnpa.org.uk
Web : www.Northumberland-national-park.org.uk <http://www.Northumberland-national-park.org.uk>
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-----Original Message-----
From: mapguide-users-bounces at lists.osgeo.org on behalf of Andy
Morsell
Sent: Tue 1/30/2007 6:29 PM
To: mapguide-users at lists.osgeo.org
Cc:
Subject: [mapguide-users] RE: MgTileService - GetTile - Cannot
establishconnection
I just ran into a case where exposing a Set DPI method to the
MgRenderingService::RenderMap function would be very handy and
would allow
more control by the programmer. I hope it is a considered
addition to the
API soon.
Thank you.
Andy
JasonBirch wrote:
>
> I'm surprised that there are methods which are available to
the MapAgent
> but not the APIs.
>
> Was this a case of deliberate exclusion, or not enough time to
get
> everything in? I can see there being some arguments for not
exposing
> these methods (only need them for rendering, etc) but there
are
> apparently going to be some use cases for accessing them :)
>
> Jason
>
> ________________________________
>
> From: Walt Welton-Lair
> Sent: Thursday, December 07, 2006 15:47
> To: users at mapguide.osgeo.org
> Subject: RE: [mapguide-users] MgTileService - GetTile - Cannot
establish
> connection
>
>
> Sorry about that - I forgot that the Set methods weren't
exposed.
>
> As Alain mentioned, currently the only way to update the view
is via
> certain HTTP requests. GETMAP / GETMAPUPDATE / GETPLOT are
used in the
> context of DWFViewer, while GETMAPIMAGE and
GETVISIBLEMAPEXTENT are used
> in the context of AJAX Viewer. You can include additional
parameters
> with any of these requests to update view related information:
>
> SETDISPLAYDPI=<dpi>
> SETDISPLAYWIDTH=<width>
> SETDISPLAYHEIGHT=<height>
> SETVIEWSCALE=<scale>
> SETVIEWCENTERX=<centerX>
> SETVIEWCENTERY=<centerY>
>
> While you can use a viewer to make these requests for you, you
can make
> the HTTP requests yourself and get the same effect. You could
write an
> application that:
>
> 1) creates a session
> 2) creates an MgMap for your MapDefinition that is part of
your session
> 3) makes one of the HTTP requests above
> - GETVISIBLEMAPEXTENT is the simplest
> - include the SETVIEWSCALE parameter with the request to
set the
> scale you want
> 4) makes calls to GetTile
> 5) repeats steps 3 and 4 for each desired scale
>
> For steps 1 and 2 there's should be sample code under the
MgMap
> documentation.
>
> For step 3 something like .NET's HttpRequest class probably
works. Just
> make the request to your MG server, e.g.
>
http:://localhost/mapguide/mapagent?OPERATION=GETVISIBLEMAPEXTENT&VERSIO
>
N=1.0.0&SESSION=<sessionId>&MAPNAME=<mapName>&SETVIEWSCALE=<scale>
>
> Here, mapName is the name from the MgMap.
>
> Walt
>
>
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