Ang. [mapguide-users] Re: View WMS in Maestro - "Object reference not set to an instance of an object"

[johan.asplund at karlstad.se]

Thanks for a fast reply.

I found what triggered the error!!

In the GetCapabilities111.xml (on our ArcGIS server) i found that the 
extent for my WMS-service was defined as follows:
<BoundingBox SRS="EPSG:3008" minx="128335.406600" miny="6572414.416700" 
maxx="179357.267900" maxy="6627935.900400"/>

The "." (dot) made Maestro throwing the error.

I edited the .xml-file:
<BoundingBox SRS="EPSG:3008" minx="128335" miny="6572414" maxx="179357" 
maxy="6627935"/>

Now i won't get the error and the preview launches! =) Great!

//Johan



Från:
Jackie Ng <jumpinjackie at gmail.com>
Till:
mapguide-users at lists.osgeo.org
Datum:
2011-07-28 14:40
Ärende:
[mapguide-users] Re: View WMS in Maestro - "Object reference not set to an 
instance of an object"



I personally experienced this strange error today. The problem in my case 
was
that the WKT for the geometry representing the extents of the Feature 
Source
was being returned like this:

POLYGON ((-1.#INF -1.#INF, 1.#INF -1.#INF, 1.#INF 1.#INF, -1.#INF 1.#INF,
-1.#INF -1.#INF))

We need the extents to generate a suitable bounding box for a temporary 
Map
Definition that contains the layer we want to preview. The above WKT does
not parse to a valid bounding box, hence null is returned, triggering this
nasty chain of events.

You may be experiencing the same problem. Right click your Feature Source
and choose "Show Spatial Contexts" and look at the extent column. Do you 
see
similar values? If so, then it's a problem in either the FDO provider,
MapGuide's handling of these values, or the WMS configuraiton document.

Long story short: Something's messed up with the Spatial Context extent
values in the Feature Source

- Jackie

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