Nicolas, Thanks for your reply.They are not multi polygons. They are two separate polygons. That means A with area 60 is one polygon and A with area 30 is second polygon. If I select one polygon on the map, only one polygon gets highlighted. But, in group stats ,I have selected the first row which is A 60. I clicked "Features" and then "Show selected on map" both the polygons on the map are getting highlighted. As I mentioned before, only one polygon should get highlighted. If I create a unique id, that will not serve the purpose. I am trying to derive the polygon with maximum area from the list of polygons that are labeled as A.
Regards. On Sun, Jul 18, 2021 at 9:58 AM Nicolas Cadieux <[email protected]> wrote: > 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 <[email protected]> a > écrit : > > > Hello, > I have a polygon shape file with an attribute table as shown below. > > <image.png> > > > 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? > > <image.png> > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > >
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