[Qgis-user] Help - Fix Geometries Required GEOS 3.10

[Andrea Giudiceandrea]

> Mars Sjoden marsofearth at gmail.com
> Fri Jan 12 11:53:20 PST 2024

> QGIS version: 3.28.14-Firenze
> GEOS version: 3.9.1-CAPI-1.14.2

> *Algorithm 'Fix geometries' starting…*

> The structured method to make geometries valid requires a QGIS build based
> on GEOS 3.10 or later

Hi Mars Sjoden,
as explained in the "Fix geometries" processing algorithm's help page 
[1], a QGIS version built with the GEOS library version 3.10 or later is 
required in order to use the "Structure" repair method.

Since your QGIS build uses a GEOS 3.9 version, you can obviously only 
use the "Linework" repair method. So you need to select the "Linework" 
method for the "Repair method" parameter in the processing algorithm 
dialog window.

Alternatively, you can install and use a QGIS version build with a more 
recent GEOS version as instructed in the Download page of the QGIS 
website [2][3].
This way you can use both the "Linework" and the "Structure" repair 
methods with the "Fix geometries" processing algorithm.

Best regards.

Andrea


[1] 
https://docs.qgis.org/3.28/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#fix-geometries
[2] https://qgis.org/en/site/forusers/download.html#mac
[3] https://qgis.org/en/site/forusers/alldownloads.html#macports