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A geometric element defined by a pair of x,y coordinates.
2
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answers
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Grouping points by attributes from field with possibly many values
with one unique city_id for each city (geometry polygon, although not relevant here) :
city_name ; city_id
New-York ; 0001
Paris ; 0002
London ; 0003
And a shapefile "points" (geometry single point … I would like to create an atlas for each city_id, with every point mentioning that city_id in the possible_city field. …