Static map image files renders with slightly different/wrong zoom

[denkan]

I'm rendering static images based on web ui map and have encountered a minor difference between the renderings: the zoom level seems to differ by 1

I'm using docker image klokantech/tileserver-gl:v1.7.0.

Feel free to check out the following screendumps which demonstrates the behavior:

Web UI (mapbox-gl) with zoom 12:

Static file with zoom 12 – wrong:

Static file with altered zoom to 13 – correct:

[petrsloup]

The mapbox-gl-native (rasterization backend) uses 512x512 tiles, so the zoom level numbering is off by 1 (as compared to the "traditional" 256x256 tiles).

[denkan]

@petrsloup Oh, so that's expected behavior when using mapbox-gl.js on frontend?

Simple enough to adjust the zoom level to the static image url, I just want to confirm that this is a correct observation and as expected.

[muesliq]

@denkan See mapbox/mapbox-gl-js#685 for explanations. Raster zoom level 13 = vector zoom level 12. There is always an offset of 1 between raster and vector.

This issue should be closed.