Create filter expression by selected elements?

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Is it possible to automatically create a filter expression for the Query Builder by selected elements?

asked Mar 18, 2019 at 9:40

Vaiaro

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So, you manually want to select all elements of interest in order to create a query which does the same? Why?
– Erik
Mar 18, 2019 at 9:44
I have a giant set of line features (around 9000), each with a unique name. When I just want to display special features (let's say 20), or filter for geoprocessing, then normally I have to write each name in a query: "Field1" In ('Name1', 'Name2', 'Name3', ... 'NameX'). So what I want is to select the features in the canvas and then filter the selected features, or automatically build a filter expression from them.
– Vaiaro
Mar 18, 2019 at 10:19
In ArcGIS you can right-click and select "Create Layer From Selected Features" to create a temporary layer. I dont Think this is possible in QGIS without saving the features to disk, see Creating new layer from selection in QGIS?. Im sure it is possible using pyqis though.
– BERA
Mar 18, 2019 at 10:38
Geoprocessing is possible for selected features only.
– Erik
Mar 18, 2019 at 10:41

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