Zooming to a very small area causes a long freeze

[havatv]

I have a PostGIS layer (municipality polygons). I experience a several minutes long freeze (with high CPU) when I zoom to a small area (scales larger than about 1:2000). No problem for smaller map scales (larger zoom windows). The extent of the dataset is about 3000 km N-S and 1000 km E-W. Quantum GIS Kore 1.0.0 preview1, code revision 9407 on MS Windows NT.

[havatv]

I am very sorry that the title turned out to be wrong on this bug report. I was in the middle of exploring the bug when I made the title, and after experimenting a bit, I found out that the "bug" was only scale dependent.

Is it possible for someone to change the title to: "Zooming to a very small area causes a long freeze" ?

[homann]

Are there any rasters loaded?

[havatv]

No rasters were involved at the time I was zooming in and out (I don't recall if any rasters were loaded earlier in the session - in case, it would have had to be a WMS layer). I tested again today (with the same version of QGIS). This time, I saw no such delays as those I had experienced the last time. Everything ran smoothly and fast. I must have experienced something that shows up after a while... - I was testing the software, so I don't recall exactly what I did before I experienced the zoom delays.

[zachariahyoder]

I think this is related to #1311, to which I have just posted an example of how to reproduce the error.

[lutra]

I tested this report with Qgis 1.2 (rev. 10972M) installed from OSGeo4W under windows XP Professional, and I cannot replicate it.

Used a polygon postgis layer, with other layer loaded from wms/wfs, and tried to zoom to very small areas. Rendering seems to me slower on windows rather than on linux, but I experienced no unacceptable delays or freezes.

If none will reply in the next days I'll close this.

[lutra]

Closing this ticket. Reopen if necessary.