I have a polygon layer. I drew a boxplot calculated from field
area in the layer.
How can I select the features whose
area value is within interquartile range (25%-75%)?
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There are two expression functions (
q3) which return %25 and %75 quartiles. You can use both in
Select Features by Expression tool.
q1: Returns the calculated first quartile from a field or expression.
q3: Returns the calculated third quartile from a field or expression.
$area > q1( $area ) and $area < q3( $area )
Different combinations can also be used.