[udig-devel] CRS not recognized in customized dataStore

[Theodor Foerster]

Actually, the dataStore I am using, does not check or transform the
features according to a query or CRS. So where should I do that? Do I
have to transform the features, when next() is called? By now, I always
thought, that udig/geotools takes care of this transformation issue. I
might have been wrong there.

	Theodor 

> -----Original Message-----
> From: udig-devel-bounces at lists.refractions.net 
> [mailto:udig-devel-bounces at lists.refractions.net] On Behalf 
> Of Jody Garnett
> Sent: Friday, April 25, 2008 9:18 PM
> To: User-friendly Desktop Internet GIS
> Subject: Re: [udig-devel] CRS not recognized in customized dataStore
> 
> Theodor Foerster wrote:
> > Actually, the problem is, that only if the map in udig has the same 
> > crs as the data coming from the datastore, the data gets displayed.
> >   
> Understood; in that case your datastore (because the map and 
> data use the same CRS) no additional complicated 
> MathTransforms have to occur, the 
> Query.getCoordainteSystemReproject() value sent to your 
> DataStore will be *null* etc....
> > Otherwise not. I am not sure, what this problem could cause.
> >   
> Does your DataStore check for 
> Query.getCoordainteSystemReproject() != null? Can you put a 
> break point in just to be sure that part of your code is working ...
> 
> Cheers
> Jody
> > 	Theodor
> >
> >   
> >> -----Original Message-----
> >> From: udig-devel-bounces at lists.refractions.net
> >> [mailto:udig-devel-bounces at lists.refractions.net] On 
> Behalf Of Jody 
> >> Garnett
> >> Sent: Thursday, April 24, 2008 8:52 PM
> >> To: User-friendly Desktop Internet GIS
> >> Subject: Re: [udig-devel] CRS not recognized in customized 
> dataStore
> >>
> >> Theodor Foerster wrote:
> >>     
> >>> Thanks, the error message is gone. I set the
> >>>       
> >> IGeoResourceInfo.getCRS()
> >>     
> >>> to the CRS of the supplied FeatureType, that works now 
> well, if the 
> >>> FeatureType CRS is the same as the CRS of the map
> >>>       
> >> So it works fine if there is no reprojection occurring.
> >>     
> >>> But if the map CRS is different, I do not see any data 
> (somewhat it 
> >>> seems to be plotted outside the map).
> >>>       
> >> You may want to check the Query that is getting sent to your 
> >> DataStore?
> >> The Query object has the ability to ask your data store to do 
> >> reprojection ... are you handling that case?
> >>     
> >>> IGeoResourceInfo.getBounds() returns always the CRS, which
> >>>       
> >> describes the extent of the features in its origin CRS.
> >>     
> >>> So one of the two parameters, should be dynamic, but which one?
> >>>   
> >>>       
> >> I am not sure what you mean; both the info CRS and the featureType 
> >> crs should be same, both are dynamic (in that they come from your 
> >> live data).
> >> Jody
> >>
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> http://udig.refractions.net 
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> >>
> >>     
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