geojsonseq export produces broken geometry JSON

[andreasparteli]

What version of osmium-tool are you using?

osmium version 1.17.0
libosmium version 2.21.0
Supported PBF compression types: none zlib lz4

What operating system version are you using?

debian:trixie-slim docker container

Tell us something about your system

Shouldn't matter

What did you do exactly?

I'm using "Italy Isole" from Geofabrik (https://download.geofabrik.de/europe/italy/isole-latest.osm.pbf downloaded on 2025-02-28) and executing a tags filter first

osmium tags-filter -v isole-latest.osm.pbf -e tags_included -f pbf | osmium tags-filter -i -v -e tags_excluded -F pbf -R -o isole-latest-filtered.pbf

and then exporting to geojsonseq

osmium export -vi sparse_file_array,$3 -u type_id -a way_nodes -o "$2" "$1".

What did you expect to happen?

Valid JSON.

What did happen instead?

I'm getting broken JSON. Some issues were already fixed with #287, but one that according to the discussion there still remains, is a broken geometry value. Note how it's not a array but multiple ones separated by a ,.

[
    [
        [
            [
                8.6968888,
                39.7043973
            ],
            [
                8.6970389,
                39.7043184
            ],
            ...
        ]
    ]
],
[
    [
        [
            [
                8.697105,
                39.7042833
            ],
            [
                8.6973662,
                39.7041447
            ],
            ....
        ]
    ]
],
[
    [
        [
            [
                8.6973003,
                39.7043332
            ],
            ...
        ]
    ]
]

Two example outputs are:

{"type":"Feature","id":"a37329353","geometry":{"type":"MultiPolygon","coordinates":[[[[8.6968888,39.7043973],[8.6970389,39.7043184],[8.6970489,39.7043259],[8.6970273,39.7043382],[8.696998,39.7043778],[8.6969864,39.7044225],[8.6969897,39.7044438],[8.6969934,39.7044676],[8.6970186,39.704509],[8.6970593,39.7045422],[8.6971113,39.7045639],[8.6971697,39.704572],[8.697231,39.7045673],[8.6972267,39.7045345],[8.6972857,39.7045088],[8.6973717,39.7045361],[8.6972547,39.7047445],[8.6970968,39.7046743],[8.6969907,39.7045987],[8.6968888,39.7043973]]]],[[[[8.697105,39.7042833],[8.6973662,39.7041447],[8.697463,39.7040492],[8.6975355,39.7039455],[8.6975868,39.7039639],[8.6974023,39.7042024],[8.6972766,39.7043153],[8.6972544,39.7042985],[8.6971931,39.7042851],[8.6971121,39.70429],[8.697105,39.7042833]]]],[[[[8.6973003,39.7043332],[8.6974228,39.7042231],[8.6976136,39.703973],[8.6976697,39.7039927],[8.6973916,39.7045066],[8.6973066,39.7044762],[8.6973279,39.7044431],[8.6973274,39.7043707],[8.6973003,39.7043332]]]]},"properties":{"leisure":"park","name":"Parco Aldo Moro"}}

{"type":"Feature","id":"a37043945","geometry":{"type":"MultiPolygon","coordinates":[[[[8.8436947,40.0008595],[8.8438011,40.0007375],[8.8439568,40.0008195],[8.8438504,40.0009416],[8.8436947,40.0008595]]]],[[[[8.8438998,40.0009676],[8.8440074,40.0008462],[8.8441561,40.0009245],[8.8440485,40.0010459],[8.8438998,40.0009676]]]],[[[[8.8440986,40.0010723],[8.8442057,40.0009507],[8.8442785,40.000989],[8.8443556,40.0010296],[8.8442484,40.0011512],[8.8441691,40.0011094],[8.8440986,40.0010723]]]],[[[[8.8442928,40.0011746],[8.8444019,40.0010541],[8.8445394,40.0011265],[8.8444303,40.001247],[8.8442928,40.0011746]]]],[[[[8.8444886,40.0012778],[8.8445953,40.0011559],[8.8447293,40.0012265],[8.8446148,40.0013443],[8.844527,40.001298],[8.8444886,40.0012778]]]]},"properties":{"natural":"water","usage":"spillway","water":"canal"}}

What did you do to try analyzing the problem?

I string replaced the inner ]]]],[[[[ with ]]],[[[ before parsing to see if that solves it. Result still pending.

[joto]

I believe this is fixed now.