Mapbox Tiling Service
Beta

Frequently Asked Questions

Public beta

Mapbox Tiling Service is in public beta. All features and workflows are subject to potential changes.

Answers to commonly asked questions for users of the Mapbox Tiling Service (MTS).

What is the difference between errors and warnings on an MTS tileset job?

Both errors and warnings are arrays in the response data from the GET /jobs/<job_id> and GET /jobs endpoints. A tileset job will only have an errors array if it has failed, describing why it failed. A successful job will have a warnings array if one or more features were dropped from the resulting tileset.

There are gaps of missing data in my tiles

If you notice that your MTS tileset is missing points, lines, or polygons, it’s likely that MTS dropped some features because the layer size was approaching the maximum allowed size of 500 KB. If you use the GET /jobs/<job_id> endpoint for this tileset job, you will see warnings about how many tiles dropped features and a list of example tiles so you can diagnose the problem.

To avoid hitting the 500 KB limit, you should reduce the number and size of features in each layer. You can do this by:

  • Increasing the recipe simplification level.
  • Only allowing certain attributes to exist in the final tileset.
  • Unioning adjoining features, such as LineStrings, which reduces the number of features in the tiles.

My minzoom is different than expected

MTS tries to generate tiles for every requested zoom level. If the zoom levels in a tileset do not match the zoom levels in the corresponding recipe, this is due to features being filtered out based on the rules you have provided, which led to empty tiles at these zooms.

For example, if you specify a minzoom level of 6 but your filtering syntax only starts accepting features at zoom 8, once processing is complete MTS will dynamically set the tileset's minzoom to 8 since there are no tiles to be requested at zoom 6 or 7.

There are "notches" in my LineStrings at high zooms

Notches in LineStrings happen when high zoom tiles do not have buffers that are large enough. To avoid possible buffer-edge artifacts, set your buffer_size to something larger than the default of 0.5. The recommended value is 6.

The features in my vector tiles have different IDs than the features in my source data

Vector tiles only support integer-based identifiers. If you provide an ID in the tileset source in any format other than integers, MTS will generate an integer hash of this value to use as the feature ID.

If you need to keep the original source IDs, you can do either of the following:

  • Use integer IDs in the source data.
  • Save the original ID of the feature as an attribute in the vector tiles using the set option in your recipe.

A feature I expected to be in my new tileset isn't there

If a feature that you expected to see is not in the new tileset, it might have been dropped for one of the following reasons:

  • The tileset source data was not valid GeoJSON. You can diagnose the problem by using the Tilesets CLI's validate-source command to validate your source data.
  • The feature was filtered out by your recipe. For more information on how and why a recipe might filter out a feature, see the Mapbox Tiling Service recipe reference.
  • The feature has been simplified away at certain zoom levels. For more information on feature simplification, see the Mapbox Tiling Service recipe reference.

I'm not able to use GeometryCollection features in my tileset source

Tileset sources do not support GeoJSON GeometryCollection features. If you have GeometryCollection features in your source data, you should split each of its sub-features into a unique, individual feature.

There are no features in my tileset when I click "zoom to data" in Mapbox Studio

Depending on how your data is distributed or the zoom range you choose, knowing where your data is can be a challenge. Mapbox Studio tries to help you visualize your data at the right location, but due to how it makes this calculation, you may not see any features if there are not any at the mathematical center of the tileset source used to create the tileset. If this occurs, you will need to manually click and drag the map to your feature locations, rather than being able to click "zoom to data".

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