Bug report #1277
digitizing with snapping option works verry slow
|Affected QGIS version:||Regression?:||No|
|Operating System:||All||Easy fix?:||No|
|Pull Request or Patch supplied:||Resolution:||wontfix|
|Crashes QGIS or corrupts data:||Copied to github as #:||11337|
when "snapping options" in the menue "project properties" ist enabled to a large shp-layer (17.000 objects) the digitize function (edit shp file) work verry slow.
#3 Updated by Marco Hugentobler about 12 years ago
The most effective way to speed up the snapping is to have a spatial index. Otherwise, every vertex of the whole dataset needs to be tested.
Do you already have an index on the dataset? If not, you may create one in the vector layer properties dialog:
Open vector layer properties dialog, go to tab 'general', press button named 'create spatial index'.
#5 Updated by Maciej Sieczka - about 12 years ago
Replying to [comment:5 gespiel]:
Thanks for advice, but creating spatial index failes
Works for me, with my data. If you can still reproduce it please open a separate ticket and attach sample data to reproduce the problem.
(see attached pdf-file
FWIW, you can attach JPEGs or PNGs as well.
#7 Updated by Maciej Sieczka - about 12 years ago
Replying to [comment:7 gespiel]:
sample data produce the same problem
(see attached jpg)
I asked you to open a separate ticket for the issue regarding spatial index. It's bad to discuss 2 separate issues in the same ticket.
And please upload some sample data into that new ticket (e.g. a Shapefile) to reproduce the problem with - a screendump is not enough!