Join "Unable to export object-type data, writing null values" about mapshaper HOT 3 CLOSED

Hi, yes, this is a Shapefile limitation. The expression data = collect("Groupe personne") creates a field named "data" containing arrays of integers (in this case). GeoJSON supports array data but Shapefile doesn't. You could use another command to transform the arrays to strings, for example:

-each 'groups = JSON.stringify(data)'

Also, you need to change data = collect("Groupe personne") to data = collect(d["Groupe personne"]) for the command to work correctly (see issue #592)

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The problem exist with the SHP output but is not present with the JSON output. Is this a shapefile limitation?

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Thanks for the proposition !

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