[mapguide-users] Fusion Error: WARNING: Exception Occured in AJAX Callback.

[Michael Adair]

I can't answer #3 but for #1 and #2, no I've never seen that error but 
being able to handle that projection is not an issue.  Parsing the 
projection Well Known Text (WKT) projection code might be, but that can 
be fixed.  The 'WKT' in your screen grab is different than the 'WKT' 
that Maestro uses and different from what is in the EPSG database for 
EPSG:52304. So much for WK... But it's also quite likely that it's not 
due to that at all too.

Some things to try:
- send me the WKT for your projection and I'll make sure that Proj4js is 
parsing it correctly.
- not sure if you get Fusion 2.2 in that release but in any case you can 
try using the trunk version of Fusion
- if we can see your site someone could probably pinpoint the problem a 
lot easier

Mike


On 10/11/2011 1:36 PM, soudemans wrote:
> Hi,
>
> We are in the process of migrating a Mapguide Enterprise website to a 64 bit
> Windows Server 2008 R2 Standard OS (Mapguide Open Source 2.2). I get a
> fusion error when refreshing the map in Mapguide Studio V2.2.0.6301.  The
> reason we are doing this is to add the ability to display tabular SQL Server
> data (with coordinates) as a point feature layer on the map.  In addition we
> have had problems with earlier versions of Mapguide OSGeo establishing a
> connection to SQL Server with the intent to join the data to map features.
>
> I have been in communication with Autodesk to resolve the connection issue
> and their first suggestion was to upgrade to the latest Mapguide Studio
> Product which we did (V2.2.0.6301).  This is when we started getting the
> Fusion Error:
>      WARNING: Exception Occured in AJAX Callback.
>      Message: Array Length must be a finite positive integer.
> In response Autodesk told us that the most likely reason for the error had
> to do with the fact that most of our data is in State Plane NAD 27 US Foot,
> and that we should convert our data to a Metric coordinate system.  They
> suggested that we use a Metric Override to accomplish this (found in the
> Feature Source's Coordinate System Overrides).  Unfortunately I could not
> find the Metric equivalent for the State Plane Coordinate System Wisconsin
> South NAD 27 (US Foot) Autodesk told us to convert the data to HARN 83,
> which I am afraid would be a very unpopular solution, since much of the
> source data is maintained by other government institutions in NAD 27.  Why
> bring this question here?  Autodesk keeps telling me that this is an Open
> Source issue, and that they don't support that.  Personally I think it is a
> Mapguide Studio issue but I can't be sure.  I am hoping that by getting
> answers to the following questions I can keep moving forward and bypass
> Autodesk support. Here are the questions:
>
> 1. Has anyone seen this Fusion Error before and if you have, do you have any
> idea what might be the cause?  If we are lucky you might also have a way to
> deal with or eliminate the error.
>
> 2. If the problem lies with the coordinate system, as Autodesk suggests, how
> and where would I be able to create the coordinate definition for Wisconsin
> South NAD 27 (Meters)?
>
> 3. Did we have to migrate to the latest version of MapGuide OSGeo?  The
> original reason for making this migration was to establish a working
> connection to SQL Server.  Have we missed something?  In truth I find it
> hard to believe that you can't create a layer from coordinates stored in a
> tabular format and if I can successfully do what I need to do using in
> MapGuide OSGeo 2.0 then great.
>
> Thanks for your help and comments
> http://osgeo-org.1803224.n2.nabble.com/file/n6982760/FusionError.jpg
>
> --
> View this message in context: http://osgeo-org.1803224.n2.nabble.com/Fusion-Error-WARNING-Exception-Occured-in-AJAX-Callback-tp6982760p6982760.html
> Sent from the MapGuide Users mailing list archive at Nabble.com.
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