I'm trying to select points from a vector point layer (quite big ~2 million points), that are within a coastline polygon for the gulf of california. The area is in the south with quite a complex coastline.
I'm trying to remove the points that are over water into a new dataset.
Using the select by location tool (i.e. select points within land polygon and delete), QGIS crashes, I can only assume due to the complex nature of the coastline and the amount of points it has to iterate through.
I've tried using the clip tool, i.e. clip points using a polygon that represents only the ocean, again I left it running overnight and by morning it was less than a third done. (most of the points are over the water)
Are there other ways to solve this problem? Or is it best to leave the clip tool running for as long as it takes?
أكثر...
I'm trying to remove the points that are over water into a new dataset.
Using the select by location tool (i.e. select points within land polygon and delete), QGIS crashes, I can only assume due to the complex nature of the coastline and the amount of points it has to iterate through.
I've tried using the clip tool, i.e. clip points using a polygon that represents only the ocean, again I left it running overnight and by morning it was less than a third done. (most of the points are over the water)
Are there other ways to solve this problem? Or is it best to leave the clip tool running for as long as it takes?
أكثر...