using mapzen in vtm

[Androider Sahapar]

Hi I Want to use mapzen web sources with vtm. for that I create a mapzenTileSourceClass which extended from GeojsonTileSource.

this is my class      

public class MapzenTileSource extends GeoJsonTileSource {
    String tag = "MapzenTileSource ";

    public MapzenTileSource() {
        super("http://tile.mapzen.com/mapzen/vector/v1/all/");
        String apiKey = "my api key";
        setApiKey(apiKey);
    }

    @Override
    public void decodeTags(MapElement mapElement, Map<String, Object> properties) {
        Log.d(tag, "decodeTags mapElement=" + mapElement + " properties=" + properties);
    }


}

but I'm getting this error message always

D/org.oscim.tiling.source.UrlTileDataSource: [X:34374, Y:21325, Z:16] Network Error: HTTP Error: HTTP/1.0 404 Not Found

im doing somthing wong?

[Emux]

Though I don't get 404 errors, proper Mapzen url is without "/" at the end:

https://tile.mapzen.com/mapzen/vector/v1/all


BTW see also #57 for an initial Mapbox .mvt tiles (via Mapzen) implementation.

--
Emux

[Androider Sahapar]

Yah you was right about "/"

but now I'm getting this error message 

java.lang.ArrayIndexOutOfBoundsException: length=512; regionStart=-10; regionLength=522

    at java.util.Arrays.checkOffsetAndCount(Arrays.java:1732)

    at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:197)

    at org.oscim.tiling.source.LwHttp$Buffer.read(LwHttp.java:245)

    at java.io.InputStream.read(InputStream.java:162)

    at java.util.zip.InflaterInputStream.fill(InflaterInputStream.java:194)

    at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:153)

    at java.util.zip.GZIPInputStream.read(GZIPInputStream.java:163)

    at java.io.InputStreamReader.read(InputStreamReader.java:233)

    at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.loadMore(ReaderBasedJsonParser.java:131)

    at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._skipWSOrEnd(ReaderBasedJsonParser.java:1688)

    at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:562)

    at org.oscim.tiling.source.geojson.GeoJsonTileDecoder.decode(GeoJsonTileDecoder.java:93)

    at org.oscim.tiling.source.UrlTileDataSource.query(UrlTileDataSource.java:86)

    at org.oscim.layers.tile.vector.VectorTileLoader.loadTile(VectorTileLoader.java:135)

    at org.oscim.layers.tile.TileLoader.doWork(TileLoader.java:66)

    at org.oscim.utils.PausableThread.run(PausableThread.java:141)

at this line of code 

cache.write(buffer, offset + (len - add), add);

in LwHttp.java class

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[Emux]

GeoJSON tile source and decoder in 'vtm-extras' is for Mapnik vector tiles with related issue #48.

GeoJSON vector tiles (via Mapzen) are mentioned in #55 and would need probably a new tile decoder.

--
Emux

[Androider Sahapar]

thanks.

but do you have any plans for adding this decoder to your great lib?

[Emux]

I'm afraid I cannot answer for when something will be ready...
VTM is an open source project and everyone is welcomed to contribute. :)

We have #55, #56, #57 open issues for all Mapzen vector tile formats: .mvt, (geo) .json and .topojson.

Currently ready is an initial implementation for Mapbox .mvt tiles (provided by Mapzen too) in #57 working at the basics.
You can have a look at the Mapbox samples in 'vtm-android-example' and 'vtm-playground'.

--
Emux

[Androider Sahapar]

thanks man. your so cool :)

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