[mapguide-users] WMS questions

Thu Mar 30 14:20:41 EST 2006

Your image request size is square, while your data request extent is
not. We don't correct for that since WMS requires this behavior in order
to support non-square pixels. You will need to match the aspect ratio of
the image with the aspect ratio of the BBOX extent.

Traian

-----Original Message-----
From: Brian Flood [mailto:BFLOOD at SPATIALDATALOGIC.COM] 
Sent: Thursday, March 30, 2006 2:17 PM
To: 'users at mapguide.osgeo.org'
Subject: RE: [mapguide-users] WMS questions

thanks Thomas

any idea why the text of the WMS request was so distorted? It looks
great in
the Studio preview window?

-----Original Message-----
From: Thomas M. Tuerke [mailto:thomas.m.tuerke at autodesk.com] 
Sent: Thursday, March 30, 2006 2:04 PM
To: users at mapguide.osgeo.org
Subject: RE: [mapguide-users] WMS questions

> I read a post that the parameter values are case sensitive but the
MGOS seem overly so

Agreed.  We're actually working on that; there's a bit of a balancing
act
Between OGC certification requirements and actually achieving the
objectives of interoperability (in-house we call it "Tolerance and
Forgiveness".)  Fortunately, that's all governed by the templates, with
a bit of lookup/translation.

- Thomas

-----Original Message-----
From: Brian Flood [mailto:BFLOOD at SPATIALDATALOGIC.COM] 
Sent: Thursday, March 30, 2006 10:59 AM
To: 'users at mapguide.osgeo.org'
Subject: RE: [mapguide-users] WMS questions

thanks

It looks like you can't publish a Map as a WMS resource (or am I missing
the
obvious again)? Are there plans to do this in the future?

I may have found a solution to my GIF problem, at least in regards to
GMaps.
If you set it up to act like the hybrid overlay, GMaps will apply the DX
transparency transform on the tile if it's IE.

also, can anyone shed some light on the text distortion of this request:
http://12.144.53.43/mapguide/mapagent/mapagent.fcgi?REQUEST=GetMap&SERVI
CE=W
MS&VERSION=1.1.1&LAYERS=Layers/Zoning_2005&STYLES=default&FORMAT=image/P
NG&B
GCOLOR=0xFFFFFF&SRS=EPSG:4326&BBOX=-74.794921875,40.413496049701955,-74.
7509
765625,40.44694705960048&WIDTH=256&HEIGHT=256

The bounding box should not govern how the text is drawn, right? 

lastly, I read a post that the parameter values are case sensitive but
the
MGOS seem overly so. For instance, the image format must be "image/gif"
or
"image/PNG" to work on the WMS request. IMO, and I know the spec says
otherwise, these should all be case insensitive. I know "image/png"
works in
other WMS servers...

cheers
brian

-----Original Message-----
From: Traian Stanev [mailto:traian.stanev at autodesk.com] 
Sent: Wednesday, March 29, 2006 4:03 PM
To: Brian Flood; users at mapguide.osgeo.org
Subject: RE: [mapguide-users] WMS questions

Aah, I see why you want to turn off the antialiasing now. We don't do
anything special with the GIF palette and I'm not aware of GD (the
library we use to write GIF) doing any optimization when saving the file
out. We didn't really concentrate on getting super quality GIFs out,
since we got 32 bit PNG compositing to work well in all browsers using
some trick workaround that Alain found. 

Traian 

-----Original Message-----
From: Brian Flood [mailto:BFLOOD at SPATIALDATALOGIC.COM] 
Sent: Wednesday, March 29, 2006 3:42 PM
To: 'users at mapguide.osgeo.org'
Subject: RE: [mapguide-users] WMS questions

thanks

via the Author...

also, after closer inspection turning off the outline does not fix the
issue, it just makes it harder to see. (on the right side this time)
http://12.144.53.43/mapguide/mapagent/mapagent.fcgi?REQUEST=GetMap&SERVI
CE=W
MS&VERSION=1.1.1&LAYERS=Layers/Zoning_2005&STYLES=default&FORMAT=image/g
if&B
GCOLOR=0xFFFFFF&TRANSPARENT=TRUE&SRS=EPSG:4326&BBOX=-74.7894287109375,40
.447
992135544304,-74.78805541992187,40.449037195237594&WIDTH=256&HEIGHT=256&
reas
pect=false

Note the dithering of the GIF image as well (I need transparency in all
browsers so no png). Not much you can do there I guess. Are you guys
optimizing the GIF palette? I know the default GIF codec in .Net does
not
(unless this is changed in 2.0). The antialiasing and non default
palette
colors would look a lot better if this occurred. 

cheers
brian

-----Original Message-----
From: Thomas M. Tuerke [mailto:thomas.m.tuerke at autodesk.com] 
Sent: Wednesday, March 29, 2006 3:30 PM
To: users at mapguide.osgeo.org
Subject: RE: [mapguide-users] WMS questions

mapguide.osgeo's Project Tracker (left panel) is the place to enter
suggestions, defects, and enhancements.

BTW, were you thinking of controlling (anti)aliasing by the author (in
studio) or by the client (via WMS parameter)?

- Thomas

-----Original Message-----
From: Brian Flood [mailto:BFLOOD at SPATIALDATALOGIC.COM] 
Sent: Wednesday, March 29, 2006 12:27 PM
To: 'users at mapguide.osgeo.org'
Subject: RE: [mapguide-users] WMS questions

thanks Traian

1) If you happen to know, how would I go about doing this?

2) yes, this was it. Turning off the outline prevents this from
happening
although, as you stated, this is not a very good work around. 

brian

-----Original Message-----
From: Traian Stanev [mailto:traian.stanev at autodesk.com] 
Sent: Wednesday, March 29, 2006 3:19 PM
To: Brian Flood
Subject: RE: [mapguide-users] WMS questions

1) No. Currently there is no way to turn off antialiased drawing. You
can
enter this as an enhancement request.

2) My guess is that this may be caused by a polygon layer that spans
many of
your tiles and is getting clipped to the extent you request, resulting
in
the black lines. The WMS serving component uses a map rendering call
that
does this kind of clipping. May be we should switch it to not clip, like
what the tiled AJAX viewer uses. Or fix the polygon clipper to not
generate
polygon segments that parallel the image bounds. Anyways, this will be
fixed. As a workaround (not a perfect one), you can try turning off the
outline of that polygon layer.

Traian

________________________________

From: Brian Flood [mailto:BFLOOD at SPATIALDATALOGIC.COM] 
Sent: Wednesday, March 29, 2006 3:02 PM
To: 'users at mapguide.osgeo.org'
Subject: [mapguide-users] WMS questions

hello all

1) Is there anyway to turn off anti-alias drawing (per layer
preferably)?

2) I keep getting a solid black line on the left and top edges of images
returned. When tiling requests together (think Google Maps custom
layer),
this creates an unwanted grid pattern. Any thoughts?

cheers

brian

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