I've installed plugin Swap vector direction in QGIS.
But it doesn't work. I click and nothing.
I need to flip lines (22 000 000 lines).
In ArcGIS takes many hours and still flipping.
I thought maybe in QGIS will be faster, but doesn't work.
Why doesn't this plugin open?
Maybe is another way to flip lines in QGIS?
I know there is solution in GRASS, but GRASS doesn't open so big file.
Version QGIS 2.4.0 Chugiak