I just installed QGIS 3.0 EA.
I wonder where the Spatial query is?
There is a ”count points in polygon” in the toolbox but it can’t count point within a polygon.
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I found the answer myself.
In Processing toolbox> Vector Selection > Select by location. There is the Spatial query.
In QGIS 3.0, the spatial queries operation can be performed with a tool called Select by Location. The tool can be found under the Vector Selection tool in the Processing Toolbox. See spatial query tutorial how to use Select by location with some examples
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