[6.0.0] With a GeoJSON of type "MultiPolygon", the chart "Deck.gl Polygon" displays only the first geometry #38660

Bug description

Many statistical entities are polygons composed of several parts, called in the GeoJSON jargon: "Multipolygon".

However, the "Deck.gl Polygon" chart is unable to fully display these geometries.

Here is for example the GeoJSON geometry of France:

{"type": "Feature", "properties": {}, "geometry": {"type": "MultiPolygon", "coordinates": [[[[8.559580925000091,42.153998114000046],[8.709157748000052,42.57916901200008],[9.292165561000047,42.67475006700005],[9.346690300000091,43.00372955900008],[9.464040561000047,42.99005768400008],[9.559580925000091,42.146551825000074],[9.223155144000089,41.37250397300005],[8.797211134000065,41.557074286000045],[8.922699415000068,41.694647528000075],[8.655121290000068,41.74990469000005],[8.805430535000085,41.90692780200004],[8.586273634000065,41.96898021000004],[8.744965040000068,42.05658600500004],[8.559580925000091,42.153998114000046]]],[[[6.577716919000068,49.35579986600008],[6.713780965000126,49.158860982000064],[7.410482625000043,49.1689378870001],[8.200305216000032,48.95856313100005],[7.810251506000071,48.6150182090001],[7.581976474333016,48.12135305932073],[7.586028488000125,47.584618544000065],[7.406348511000118,47.43824249300006],[6.973300008000137,47.48909210300009],[6.866639852000077,47.35416493700002],[7.036551961000043,47.329515279000034],[6.442634725000062,46.94416412400004],[5.958529907000127,46.21196075400009],[6.140327596000134,46.15020741800002],[6.482942342000115,46.448587138000065],[6.787058146000049,46.41417063500002],[6.765664103000034,46.151602681000085],[7.022082560000115,45.925259909],[6.783868043959269,45.76499475113478],[7.160678752000081,45.41092437800005],[7.055465536000071,45.21367543600003],[6.602728312000067,45.1034496060001],[7.004925985000057,44.827962545000034],[6.866123088000052,44.37212473600009],[7.689948771000076,44.06733713800007],[7.476410352000073,43.76463450700004],[6.731146285000079,43.407846721000055],[6.590891640000052,43.26889795100004],[6.679800772000078,43.20155281400008],[6.180072448000089,43.035922138000046],[5.034022073000074,43.335476431000075],[5.22632897200009,43.48029205900008],[5.029144727000073,43.558579820000034],[4.855778264000094,43.341779141000075],[4.694590691000087,43.57908763200004],[4.820279138000046,43.34635571600006],[3.952972852000073,43.539943752000056],[3.114024285000085,43.106309312000064],[3.037608269000089,42.68321360900006],[3.181569858000046,42.43508535400008],[2.514812459000069,42.32566050300004],[2.009210245000077,42.34708038300006],[1.721992635000049,42.60985504200006],[0.706757446000097,42.84658477900008],[0.656734660000097,42.6879898080001],[-0.038933471999911,42.68514760400002],[-1.286040811999953,43.109178569000036],[-1.457141478999858,43.04507395500012],[-1.403501342999959,43.243330587000074],[-1.747356322999906,43.29100209600004],[-1.794074744885912,43.38601533206285],[-1.47687740799995,43.580064195000034],[-1.257232225999928,44.55605703300006],[-1.044748501999948,44.66941966400009],[-1.172230597999942,44.77826569200005],[-1.260365363999938,44.62742747600004],[-1.099598761999914,45.55353424700007],[-0.766184048999946,45.32607656500005],[-0.715972459999932,45.13450755400004],[-0.534657355999911,44.894964911000045],[-0.596180792999917,45.024644273000035],[-0.493763800999943,44.99799225500004],[-0.841786261999914,45.514553127000056],[-1.247303839999915,45.70990631700005],[-0.987172003999945,45.71735260600008],[-1.151722785999937,45.86815013200004],[-1.119189720473402,46.3110109635433],[-1.795399542999917,46.49453359600005],[-2.118763800999943,46.819973049000055],[-1.990715865444827,47.035387307778024],[-2.241118943999936,47.14248281500005],[-2.151682094999956,47.27968984600005],[-1.727040167999917,47.21076080900008],[-2.010121222999942,47.31972890800006],[-2.278391079999949,47.24640534100007],[-2.541981574999909,47.300116278000075],[-2.391835089999915,47.42365143400008],[-2.494740363999938,47.49119700700004],[-2.36392167899993,47.50617096600007],[-2.817128058999913,47.499212958000044],[-2.909250454999949,47.55841705900008],[-2.741444464999915,47.55133698100008],[-2.683990037999934,47.62299225500004],[-2.706532355999911,47.64272695500006],[-2.967193162999934,47.66380442900004],[-3.131703253999945,47.478216864000046],[-3.118031378999945,47.732123114000046],[-3.224191860999952,47.65639883000006],[-3.358265753999945,47.697333075000074],[-3.282622850999928,47.78733958500004],[-3.460682745999918,47.70758698100008],[-4.132191535999937,47.923895575000074],[-4.371815558999913,47.80719635600008],[-4.434641079999949,47.97565338700008],[-4.728138800999943,48.04059479400007],[-4.28538977799991,48.11538320500006],[-4.557484503999945,48.17719147300005],[-4.546701626999948,48.34682851800005],[-4.515533006999931,48.29584381700005],[-4.187489386999914,48.307521877000056],[-4.453724738999938,48.33539459800005],[-4.289906378999945,48.43158600500004],[-4.599354620999918,48.35016510600008],[-4.783355272999927,48.37641022300005],[-4.563628709999932,48.62962474200003],[-3.973988410999937,48.73281484600005],[-3.851714647999927,48.62962474200003],[-3.213612433999913,48.86981842700004],[-2.682362433999913,48.509019273000035],[-2.316070115999935,48.698553778000075],[-1.980295376999948,48.51357656500005],[-1.976958787999934,48.691107489000046],[-1.356556769999941,48.64325592700004],[-1.553618943999936,48.74713776200008],[-1.548410610999952,49.225490627000056],[-1.816477016999954,49.38373444200005],[-1.935210740999935,49.72410716400009],[-1.263050910999937,49.69550202000005],[-1.118763772743309,49.34620165683242],[-0.219471808999913,49.28009674700007],[0.411306186000047,49.452053127000056],[0.075368686000047,49.52407461100006],[0.235850457000083,49.72931549700007],[1.672536655000044,50.19253164300005],[1.541514519000089,50.27789948100008],[1.653712984566596,50.339042218823295],[1.580577019000089,50.868801174000055],[2.521799927545686,51.08754088371883],[2.768233683000119,50.733235169000054],[3.129245239000085,50.7790721650001],[3.27104537000011,50.5269428510001],[3.608285766000051,50.47650665300007],[3.696859172000131,50.298222962000054],[4.197603800000081,50.25848378500005],[4.135735555765922,49.97399301544438],[4.645845174000073,49.9844953420001],[4.815550578000085,50.16133209200005],[4.849036906000066,49.7941710410001],[5.456131633000041,49.49894358400009],[6.577716919000068,49.35579986600008]],[[-2.442054612099323,47.46161466559271],[-2.345739072999834,47.45948156192452],[-2.433102356988172,47.465831659603396],[-2.442054612099323,47.46161466559271]]]]}}

This GeoJSON displays perfectly in any GIS or library displaying interactive maps.

This one is a MultiPolygon whose coordinates are divided into 2 parts. The 1st part takes up the geometry of Corsica:

[[[8.559580925000091,42.153998114000046],[8.709157748000052,42.57916901200008],[9.292165561000047,42.67475006700005],[9.346690300000091,43.00372955900008],[9.464040561000047,42.99005768400008],[9.559580925000091,42.146551825000074],[9.223155144000089,41.37250397300005],[8.797211134000065,41.557074286000045],[8.922699415000068,41.694647528000075],[8.655121290000068,41.74990469000005],[8.805430535000085,41.90692780200004],[8.586273634000065,41.96898021000004],[8.744965040000068,42.05658600500004],[8.559580925000091,42.153998114000046]]]

The second part, takes up the geometry of continental France:

[[[6.577716919000068,49.35579986600008], ... [-2.442054612099323,47.46161466559271]]]

However, Deck.gl Polygon is unable to read this GeoJSON correctly and stops after reading the first geometry.

In this example, it stops after reading Corsica and therefore does not display continental France.

To display France correctly, currently, I have to split my 'MultiPolygon' into 2 'Polygons', which duplicates my rows in my tables and creates errors when I calculate metrics on my columns.

Would it be possible for Deck.gl Polygon to display the MultiPolygons correctly?

(It should be noted that the chart 'Country Map' and 'World Map' display GeoJSON MultiPolygon.)

Screenshots/recordings

No response

Superset version

6.0.0

Python version

3.11

Node version

18 or greater

Browser

Chrome

Additional context

No response

Checklist

• I have searched Superset docs and Slack and didn't find a solution to my problem.
• I have searched the GitHub issue tracker and didn't find a similar bug report.
• I have checked Superset's logs for errors and if I found a relevant Python stacktrace, I included it here as text in the "additional context" section.