[QGIS-uk-user] Polygon Centroids Extraction

Herbert Chitate herbert at talarius.co.zw
Wed Mar 3 22:14:38 PST 2021


Thank you Ross,

Much appreciated for your feedback, but as a new user unfortunately its
gone way over my head. What are convex hulls?

Thank you for the email for the main QGIS mailing list.

Regards

Herbert

On Wed, Mar 3, 2021 at 10:31 AM McDonaldR <McDonaldR at angus.gov.uk> wrote:

> Hello Herbert
>
>
>
> Welcome to the world of QGIS!
>
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> You could create convex hulls around your point clusters and then get the
> centroid of the resulting polygon for each cluster.
>
>
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> Hope that helps
>
>
>
> Ross
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>
>
>
>
> P.S. This is the QGIS UK mailing list. If you want to reach more QGIS
> users then you can send your queries to the main QGIS mailing list
> qgis-user at lists.osgeo.org
>
>
>
> *From:* qgis-uk-user <qgis-uk-user-bounces at lists.osgeo.org> *On Behalf Of
> *Herbert Chitate
> *Sent:* 01 March 2021 11:09
> *To:* qgis-uk-user at lists.osgeo.org
> *Subject:* [QGIS-uk-user] Polygon Centroids Extraction
>
>
>
> Good afternoon All,
>
>
>
> I am new to QGIS and was wondering if someone might be able to assist me
> on an extraction I am trying to do.
>
>
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> I have lat and lon details for about 1,500 locations, which using python
> (kmeans), I have clustered the data into 20 clusters of which I have the
> details of the constituent members (+ gps locations) that make up the 20
> clusters. Info now in a CSV file.
>
>
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> How can I use QGIS to establish the lat and lon of the centroids for each
> of the clusters?
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> Thank you for the assistance.
>
>
>
> Regards
>
>
>
> Herbert
>
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