[Qgis-user] Group Statistics Tool

[Nicolas Cadieux]

Hi,

I do you have multipolygons in your input files?  If not, perhaps the multipolygon is being created because both polygon have the same ID, A.  Try creating a unique id field to see what is going on.  A multipolygon or multipart object will contain multiple polygons but only one data line in the data table. You can split multipolygon with a «multiple to single »tool found in the vector menu.

Nicolas Cadieux
https://gitlab.com/njacadieux

> Le 17 juill. 2021 à 20:56, krishna Ayyala <ayyalakrishna at gmail.com> a écrit :
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> Hello,
> I have a polygon shape file with an attribute table as shown below.
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> I am using the Group stats tool to derive only those rows that have max area for each polygon. After clicking calculate, I got the results below. In the below window. I have selected the first row which A 60. I clicked "Features" and then "Show selected on map" . Technically, it is supposed to highlight only one polygon which is A with an area 60 on the map. But is highlighting both the polygons i.e..A with an area 60 and also A with an area 30. Is there a way to select only the polygon A with an area 60?
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