[QGIS-Developer] QGIS server issue: bounding box issues

[René-Luc Dhont]

Hi Andreas

Le 09/05/2019 à 11:59, Andreas Neumann a écrit :
> Hi René-Luc,
>
> Thanks for the explanation. Any chance we can "influence" that extent 
> calculation (e.g. adding a user-defined margin to that extent?) - I 
> guess a fully manual override would not be satisfactory as data 
> changes, but adding a user-defined margin to that extent might help 
> for both issues we have.
>
> Also, this fact that layer extents are stored in QGIS worries me quite 
> a bit. We live in a GDI where any minute data can be changed by any 
> client (QGIS, ArcGIS, Geomedia, you name it). What if Geomedia adds 
> features outside of the layer extent that is stored in the QGIS 
> project, would that data then be ignored by QGIS server, because it is 
> outside of the extent stored in the project file in QGIS?

Yes, new features outside the extent will be ignored by QGIS Server and 
QGIS Desktop if the user does not recalculate the layer extent.

>
> Anyway - I would rather have global bounding boxes for all layers 
> (defined globally per project) than some calculated exents stored in a 
> QGIS project file that might be outdated quite easily, because other 
> GIS edit the data meanwhile. I am not worried about bounding boxes 
> being too big, but worried about bounding boxes that hide away 
> existing data.
>
> Andreas
>

We, a customer and I, would like to add the ability to define manually 
the extent for each layer. The extent could be calculated, based on the 
CRS and modified by user.
Do you think, could it be a solution ?

René-Luc