[mapguide-users] Projections are shifting incorrectly....off by 10m

[Andrew DeMerchant]

Interestingly enough, it seems that all of my shp layers are fine. They 
don't get shifted. I can bring them in using either system, and they 
land right on top of each other. So the problem seems to be with DWF's 
and Rasters...could it be those providers?

Andrew

Andrew DeMerchant wrote:

> Here's a screen capture of something. You're not seeing 
> double....There are actually 2 dwf's here. One was brought into Studio 
> using the default coord system (*XY-M*), and the other was brought 
> into it using the actual coord system (CANST-NB-ATS) - which my Map is 
> set to in Studio. All of the layers that I had brought in were 
> originally brought in using the real system (CANST-NB-ATS). When it 
> came to my rasters, I was noticing a shift that wasn't happening in my 
> AutoCAD drawing. Yesterday, I finally traced it to this coord problem. 
> I deleted my existing raster layers, and brought them in using the 
> *XY-M* system....no shift. They lined up perfectly. After that, I 
> added a new DWF layer. Same problem...It was shifted. Brought it in 
> using *XY-M*, and the shift was gone. I've compared the output from 
> MapGuide to my AutoCAD drawing, and the coords of the *XY-M* layers 
> are correct. The shifted ones are incorrect.
> What I find curious about this, is the fact that either MapGuide or 
> Studio is modifying the projection, even when the coord system of the 
> layer matches the coord system of the map it's being used in. I would 
> think that if the systems matched, it wouldn't try to transform 
> anything...but it obviously is.
> Is this a bug in Studio, or a bug in MapGuide?  In anycase, it's 
> making me question my other layers now....
>
> Andrew DeMerchant
> -- 
> 	*Andrew DeMerchant*
> *Computer Technologist*
> ph.1-877-4GEMTEC x.163
> fax 506-453-9470
>
> /GEMTEC Limited <http://www.gemtec.ca>
> /191 Doak Road
> Fredericton, NB, Canada
> E3C 2E6
>
>
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-- 
	*Andrew DeMerchant*
*Computer Technologist*
ph.1-877-4GEMTEC x.163
fax 506-453-9470

/GEMTEC Limited <http://www.gemtec.ca>
/191 Doak Road
Fredericton, NB, Canada
E3C 2E6

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