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Incomplete polygon points returned for "London" #4960

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openstreetmap-trac opened this issue Jul 23, 2021 · 1 comment
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Incomplete polygon points returned for "London" #4960

openstreetmap-trac opened this issue Jul 23, 2021 · 1 comment
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Component: nominatim Priority: major Resolution: wontfix Type: defect

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Reporter: flamingtoast
[Submitted to the original trac issue database at 11.11pm, Monday, 19th August 2013]

The nominatim API returns an incomplete set of polygon points that only cover half of london (http://nominatim.openstreetmap.org/search.php?format=json&q=london&limit=1&polygon=1), yet using the OSM nominatim web interface gives us the complete shape: (http://nominatim.openstreetmap.org/search.php?q=london&viewbox=-168.76%2C62.6%2C168.76%2C-62.6&polygon=1). Why is this happening?

Plotting the points returned by the API yields this shape:
[[Image(http://i.imgur.com/iVGIAS3.jpg)]]
@openstreetmap-trac openstreetmap-trac self-assigned this Jul 23, 2021
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Author: lonvia
[Added to the original trac issue at 9.31pm, Tuesday, 20th August 2013]

The polygon parameter does not support multipolygons (never did and probably never will because the implementation is a CPU and memory hog). Just use one of the polygon_* parameters, they always return complete geometries (although they might get slightly simplified at some point).

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Component: nominatim Priority: major Resolution: wontfix Type: defect
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