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Centroid of polygon leans towards many vertices. #47

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tillnagel opened this issue Oct 27, 2012 · 2 comments
Closed

Centroid of polygon leans towards many vertices. #47

tillnagel opened this issue Oct 27, 2012 · 2 comments

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@tillnagel
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Currently, the centroid of a set of locations/vertices tends to move towards borders where many vertices are defined. This is due to the algorithm ("minimizes the sum of squared Euclidean distances between itself and each point in the set").

We need to calculate the correct centroid of a polygon.

Red circle indicates the centroid currently calculated by Unfolding. Green shows the correct centroid.

Centroid map example
tillnagel added a commit that referenced this issue Oct 27, 2012
@tillnagel
Added centroid tests.
d9f983b 
Created some apps to interactively set locations and calculate centroid
with different algorithms. New getCentroidOfPolygon calculates it
correctly, but needs to be cleaned up and added to GeoUtils. Related to
#47
@gdad-s-river
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Is this something similar to

https://github.com/Mapbox/polylabel ? ( Medium post: http://bit.ly/mapbox-visual-centre )

@tillnagel
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Thanks @gdad-s-river. This has been fixed since a while. See GeoUtils#getCentroid

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@tillnagel @gdad-s-river