Re: [udig-devel] PostGIS Views as Layers

[Jesse Eichar <jeichar@xxxxxxxxxxxxxxx>]

OK I'll have to get our local Postgis guru to help me set up views so  
I can test this.  But I'll do what I can.

Jesse

When do I get an IPhone? ;P


Le 28-Jan-08 à 1:30 PM, David Garbin a écrit :

> It is correct that a re-render does not show the new data in the  
> view, even though the new data is well within the bounding box.  The  
> correct data is in the table view and it renders correctly after a  
> restate of udig, but after a refresh in the same session.
>
> Sent from my iPhone
>
> On Jan 28, 2008, at 2:23 PM, Jesse Eichar <jeichar@xxxxxxxxxxxxxxx>  
> wrote:
>
> > I'm not sure exactly what you want here.  So you update one of the  
> > tables that the view is constructed from.  But when you trigger a  
> > re-render it doesn't show the new data? Is that right.
> >
> > Assuming so.  Does it show new data if the data is well within the  
> > existing bounding box?
> >
> > Jesse
> >
> > Le 26-Jan-08 à 9:32 PM, David Garbin a écrit :
> >
> > > I am using uDIG RC13 to visualize PostGIS layers under OSX.  In  
> > > general, this has worked very well, but there is one last thing  
> > > that I need to make this a smashing success.  I want uDIG to  
> > > respond to changes in the underlying PostGIS tables based on my  
> > > input.  I do this using views as features as follows:
> > >
> > > 1.  I create PostGIS tables with a "visible" column.
> > > 2.  Based on an event, I have a trigger function manipulate the  
> > > "visible" column to mark only the records I want to show.
> > > 3.  I create views of the tables in PostGIS to contain only those  
> > > records marked visible.  The geometry column is registered for  
> > > these views.
> > > 4.  I add the views as layers in uDIG.  When I start uDIG, it  
> > > correctly displays the layers.
> > >
> > > The problem occurs when I then trigger an event and the views  
> > > change in PostGIS.  When I refresh the display in uDIG, the old  
> > > view disappears, but the new contents of the view do not display.   
> > > It's like there is not a refresh of the geometry from the  
> > > database.  Ironically, the new attributes of the views display  
> > > correctly in the Table window.  If I then close uDIG and open it  
> > > again, the correct view contents are pulled in and displayed.
> > > _______________________________________________
> > > User-friendly Desktop Internet GIS (uDig)
> > > http://udig.refractions.net
> > > http://lists.refractions.net/mailman/listinfo/udig-devel
> >
> > _______________________________________________
> > User-friendly Desktop Internet GIS (uDig)
> > http://udig.refractions.net
> > http://lists.refractions.net/mailman/listinfo/udig-devel
> _______________________________________________
> User-friendly Desktop Internet GIS (uDig)
> http://udig.refractions.net
> http://lists.refractions.net/mailman/listinfo/udig-devel