I'm looking for a feature in QGIS but I am not sure if it exists.
I don't know the name of such feature, but I call it multiple selection sets. It exists in TransCAD and I find it very useful. It basically allows one to save the selected features under a name, and have multiple sets that one can compose (union, intersection, difference, etc).
I am under the impression that QGIS allows only to save the selected set as a new file, which is not what I am looking for.
Does it exists in QGIS? How can one use it? If not, is there a work-around?
[GIS] Save multiple selection sets in QGIS
qgisselect-by-attributetools
Best Answer
Method 1 - New Memory Layer plugin
With some steps, you can create a memory layer from your selection.
Method 2 - Using Processing toolbox (> QGIS 2.2)
Using processing toolbox, this is pretty straightforward.
Note: Beware that all temporary or memory layers will be lost if the project is closed. So make sure to save them before you do.