QGIS is painfully slow on large datasets!
|Reported by:||sandinog||Owned by:||nobody|
|Priority:||major: does not work as expected||Milestone:||Version 1.6.0|
|Keywords:||'large dataset', speed||Cc:|
|Must Fix for Release:||No||Platform:||Windows|
|Platform Version:||Awaiting user input:||no|
I tried using QGIS with a fairly large dataset (all parcel polygons, roadway centerline lines, and street light points in Sacramento County, California (about 105 Mbytes of shapefiles, 155 Mbytes of attached database information). Every re-rendering took so much time!
- It seems like the program is doing too much 'behind the scenes,' like it should use scale and the window size to re-render what the user can see, and not worry about what's off-screen, at least until a change of window coordinates (pan) or change of scale (zoom) is made.
- I'm willing to upload the dataset I've been using (although the data owners don't really want the databases showing up all over the net), but given the size, I can hardly e-mail them.
Until the program can handle larger datasets, its going to remain a toy and a nice idea, but not a viable alternative to ArcGIS.