Projections other than WebMercator are not working on OGCVectorTile about openlayers HOT 14 CLOSED

The parser is not using the orderedAxes property in the json, and defauiting to the Lat/Lon axisOrientation for EPSG:4326.

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I'd expect that matrix set request to return a json response, but (in the browser) if returns a HTML response, that might be unexpected

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Vector tiles do not support client side reprojection. If you want to consume an EPSG:4326 service, your map's view projection also needs to be EPSG:4326. Also note that you do not need to specify featureProjection and dataProjection on the MVT format.

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I'd expect that matrix set request to return a json response, but (in the browser) if returns a HTML response, that might be unexpected

If that's the case, then you won't get it to work with my suggestion above. That might be a problem of the service you're consuming.

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Vector tiles do not support client side reprojection. If you want to consume an EPSG:4326 service, your map's view projection also needs to be EPSG:4326. Also note that you do not need to specify featureProjection and dataProjection on the MVT format.

Thanks for the comment @ahocevar . My view is indeed in 4326, but that does not change anything. I am unable to show any 4326 vector tiles.

,
    view: new View({
        center: [0,0],
        zoom: 2,
        projection: 'EPSG:4326'
    })

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I'd expect that matrix set request to return a json response, but (in the browser) if returns a HTML response, that might be unexpected

If that's the case, then you won't get it to work with my suggestion above. That might be a problem of the service you're consuming.

@ahocevar the same service works without problems, with a WebMercatorQuad Tile matrix set

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I'd expect that matrix set request to return a json response, but (in the browser) if returns a HTML response, that might be unexpected

The url for a json response is https://maps.gnosis.earth/ogcapi/tileMatrixSets/WorldCRS84Quad?f=json

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I'd expect that matrix set request to return a json response, but (in the browser) if returns a HTML response, that might be unexpected

The url for a json response is https://maps.gnosis.earth/ogcapi/tileMatrixSets/WorldCRS84Quad?f=json

@mike-000 I would expect the client to get the right format, by using content negotiation. There should be no need to enforce it with the "f" parameter.

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I would expect the client to get the right format, by using content negotiation. There should be no need to enforce it with the "f" parameter.

Yes, it does return a json when the application sets a Accept: application/json header. The reason no tiles are loaded is the calculated tile grid has an incorrect extent [90, -360, 450, -180] https://codesandbox.io/s/ogc-vector-tiles-forked-pkzctf

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I would expect the client to get the right format, by using content negotiation. There should be no need to enforce it with the "f" parameter.

Yes, it does return a json when the application sets a Accept: application/json header. The reason no tiles are loaded is the calculated tile grid has an incorrect extent [90, -360, 450, -180] https://codesandbox.io/s/ogc-vector-tiles-forked-pkzctf

Unfortunately I cannot open your sandbox. Here is my code: https://github.com/ogcincubator/ogcapi-tiles-map/blob/master/main.js

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The codesandbox is based on https://openlayers.org/en/latest/examples/ogc-vector-tiles.html with the main.js changed to

const map = new Map({
  target: 'map',
  layers: [
    new VectorTileLayer({
      source: new OGCVectorTile({
        url:
          'https://maps.gnosis.earth/ogcapi/collections/NaturalEarth:cultural:ne_10m_admin_0_countries/tiles/WorldCRS84Quad',
        format: new MVT(),
        projection: 'EPSG:4326',
      }),
      background: '#d1d1d1',
      style: {
        'stroke-width': 0.6,
        'stroke-color': '#8c8b8b',
        'fill-color': '#f7f7e9',
      },
    }),
  ],
  view: new View({
    center: [0, 0],
    zoom: 1,
    projection: 'EPSG:4326',
  }),
});

setTimeout(() => {
  console.log(map.getLayers().item(0).getSource().getTileGrid().getExtent());
}, 5000);

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Thank you @mike-000! Indeed the grid with in 4326 does not look right:
[90, -360, 450, -180]
While the grid in 3857 looks like this:
[-20037508.342789244, -20037508.342789244, 20037508.342789244, 20037508.342789244]

I assume the problem is in this file?
https://github.com/openlayers/openlayers/blob/main/src/ol/tilegrid/TileGrid.js

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It will be an incorrect extent passed to that constructor at https://github.com/openlayers/openlayers/blob/main/src/ol/source/ogcTileUtil.js#L293

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#15524 fixes the axis order when a projection is specified in the constructor, but there is a separate issue that specifying the projection should not be necessary, the crs in the TileMatrixSet could be used but isn't.

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