Leaving the rest below, but the main thing was accessing the geometry properly. If iterating over rows, e.g. for index, row in zones.iterrows(): you can simply use row.geometry.centroid.x and row.geometry.centroid.y. Geometry is a special column included in a GeoDataFrame, so every row has a geometry attribute.

Export the coordinates of the created centroid to the attribute table by clicking on -> vector Menu -> Geometry tools -> Export/Add geometry columns. Afterwards you could make a spatial join to add the centroids columns to the polygons and delete the point layer again.

2021年10月21日 · With geometry generator in QGIS I'm trying to place a marker in the midpoint of each segment of a multiline vector (I don't want to use the Highlight line option). My main issue is how to read each line of a multiline separately and have a centroid of each segment.

2019年6月24日 · In my GeoServer SLD I need to place a symbol (particularly a piechart) exactly on Centroid of the result of Intersection of 2 geometry: geom field from my PostGIS table AND; environment variable WMS_BBOX; My aim is to place my Piechart on centroid of shown part of a polygon (an not on centroid of the whole polygon itself).

Since version 1 (I think), sf uses the Google S2 geometry library for spherical geometry, and st_centroid() dispatches to S2 for the calculation of the centroid in a spherical polygon. So you can use st_centroid() with long/lat coordinates now. –

2013年7月25日 · The centroid function returns the centroid of the vertices within a geometry (see the documentation). It was originally only intended for use with polygons but can now be used with other geometries. It was originally only intended for use with polygons but can now be used with other geometries.

2021年12月15日 · Using QGIS, I have polygons with data for multiple individuals. The individuals do not have x,y location data; they are simply located somewhere within the polygon, and the exact location is not

2020年9月8日 · I want to get the centroids of my multipolygons using Python and GeoPandas. But when viewing the polygons and the centroids points on QGIS, the centroids are not inside the polygons. Here is the co...

I have a series of polygons (lakes) in Kansas, Oklahoma and a few in Texas. I created centroids for each lake, which I needed for distance measurements. These centroids have derived lat/long inform...

2023年6月4日 · The lines connecting the points with their associated buffer centroid can be visualised using a Geometry Generator symbol layer like so: collect_geometries( array_foreach( overlay_within( 'buffers', @geometry ), make_line(@geometry, centroid(@element)) ) )