[Qgis-user] shapefile clipping behavior in qgis revision 13903

[Marco Hugentobler]

Hi Jim

I cannot reproduce this on my system here (kubuntu 10.04). What os are you 
using?
Also, does the clipping behaviour change if you have all layers in symbology-
ng or in old symbology?

Regards,
Marco

Am Sonntag, 11. Juli 2010, um 00.42:26 schrieb Jim Hammack:
> I am using QGIS to display oil spill extents and tropical weather in the
> Gulf of Mexico.   I've found that since I moved from 1.4.0 to  1.5.0
> (rev 13903) that the clipping behavior has changed, and not in a good
> way!   (This may have happened much earlier than rev 13903, but I
> haven't been keeping up with the latest revisions.)
> 
> It seems now that if any portion of a shapefile falls outside the view,
> the entire shapefile is omitted from the display instead of just being
> clipped at the edges of the window.
> 
> It's hard to explain so I've posted sample images at
> http://gotslack.org/qgis/shapefiles
> 
> oil_zoom_out_again.png shows state boundaries, oil spill extents and
> emergency fishing closures.  In oil_zoom_out.png the zoom level has
> changed, but I did not change the layers at all.  You can see that the
> emergency fishing closure polygon and several state boundaries were not
> plotted.
> 
> In oil_south.png I have panned to show the oils spill extent and the
> fishing boundary, but the state boundaries are not plotted.  As I pan up
> to oil_center.png, state boundaries and the fishing extents are not
> plotted because they all fall partially outside the window.  Panning up
> to oil_north.png shows the oil extent and only one state boundary is
> plotted because portions of the other states and the fishing boundary
> fall outside the window.
> 
> I don't think this is the behavior we want and I'm hoping that this is
> simply a configuration item that I have not been able to find.
> 
> Can anyone confirm that this is the expected behavior?  Is there a way
> to configure the project such that clipping is performed as it was in
> 1.4.0?
> 
>                                           Thanks,
>                                              Jim
> 
> 
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-- 
Dr. Marco Hugentobler
Sourcepole - Linux & Open Source Solutions
Webereistr. 66, CH-8134 Adliswil, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee