Re: [Qgis-user] how to find center of polygons and/or major and minor diameters

2021-01-12 Thread David Greenewalt
Azzurra, Two other methods to try are: Point on surface Pole of inaccessibility Both found in the Processing Toolbox David On 1/12/2021 2:13 PM, Brent Wood wrote: This may be a suitable approach, not specifically the ellipse axis approach, but: Vector -> Geometry tools -> Centroid

Re: [Qgis-user] how to find center of polygons and/or major and minor diameters

2021-01-12 Thread Brent Wood
This may be a suitable approach, not specifically the ellipse axis approach, but: Vector -> Geometry tools -> Centroid may do what you want, depending on exactly how QGIS calculates the centroid... Brent Wood Principal Technician, Fisheries NIWA DDI: +64 (4) 3860529

[Qgis-user] how to find center of polygons and/or major and minor diameters

2021-01-12 Thread Azzurra Lentini
Hi to all, any suggestion on how to quickly draw the minor and major diameters of different polygons? I have a shapefile of polygons: some of the polygons are ellipses and others are similar to ellipses but not regular. My aim is to find the center of these polygons (In this aim I was thinking to