invalid-dataqgisshapefile
I have a shapefile, and it's got a self-intersecting geometry in it. I'd like to fix the self-intersection, but it will require a few moves. When I attempt to move a point using the QGIS edit tools, I am warned that the resulting geometry is invalid (I know this already) and that my last change has been reverted.
Is there a way to suppress these warnings in QGIS so I can make the change, and only have it enforce validity when I'm done?
I ran the Check validity from the dropdown
Used the default settings
The result was an Invalid Output
I then copied and pasted the co-ordinated into the QGIS project window screen (Centre bottom) and zoomed in until I found an intersection...
I deleted three nodes to remove the spike intersecting and ran the Intersection to get the result.
Go to Settings > Options > Processing and under General change to Ignore features with invalid geometries.
Alternatively, it's also worth checking the answer by A.Oikonomidis as well as other tools available in the processing toolbox to fix invalid geometries in the original dataset.
Best Answer
Which version of QGIS are you using?
QGIS 1.5 'Tethys' (1.5.0) has a fix for 'Allow editing of invalid geometry in node tool'
http://www.qgis.org/en/about-qgis/qgis-releases.html