The power of array in qgis : match two sets of lines together

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August 20, 2020

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Datagistips

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OpenEdition


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Thoroughfares Avenues Boulevards

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Mathieu Rajerison, « The power of array in qgis : match two sets of lines together », Datagistips, ID : 10670/1.1i349h


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Abstract 0

On Georezo, a French forum, someone asked how to retrieve the streets closest to pipelines. The QGIS expression So, let's suppose we have one data for pipelines (source) and one for streets (target), here is a QGIS expression that retrieves the street data object index closest to each pipeline. with_variable( 'mean_distances', aggregate( 'streets', 'array_agg', array_avg( with_variable( 'nodes', nodes_to_points(geometry(@parent)), array...

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