Sprite¶

A style’s sprite property supplies a URL template for loading small images to use in rendering background-pattern, fill-pattern, line-pattern, and icon-image style properties.

"sprite" : "/geoserver/styles/mark"

A valid sprite source must supply two types of files:

An index file, which is a JSON document containing a description of each image contained in the sprite. The content of this file must be a JSON object whose keys form identifiers to be used as the values of the above style properties, and whose values are objects describing the dimensions (width and height properties) and pixel ratio (pixelRatio) of the image and its location within the sprite (x and y). For example, a sprite containing a single image might have the following index file contents:
```
{
  "poi": {
    "width": 32,
    "height": 32,
    "x": 0,
    "y": 0,
    "pixelRatio": 1
  }
}
```
Then the style could refer to this sprite image by creating a symbol layer with the layout property "icon-image": "poi", or with the tokenized value "icon-image": "{icon}" and vector tile features with a icon property with the value poi.
Image files, which are PNG images containing the sprite data.

Mapbox SDKs will use the value of the sprite property in the style to generate the URLs for loading both files. First, for both file types, it will append @2x to the URL on high-DPI devices. Second, it will append a file extension: .json for the index file, and .png for the image file. For example, if you specified "sprite": "https://example.com/sprite", renderers would load https://example.com/sprite.json and https://example.com/sprite.png, or https://example.com/sprite@2x.json and https://example.com/sprite@2x.png.

If you are using Mapbox Studio, you will use prebuilt sprites provided by Mapbox, or you can upload custom SVG images to build your own sprite. In either case, the sprite will be built automatically and supplied by Mapbox APIs. If you want to build a sprite by hand and self-host the files, you can use spritezero-cli, a command line utility that builds Mapbox GL compatible sprite PNGs and index files from a directory of SVGs.

Note

This Mapbox Style Specification document was started from the BSD github.com/mapbox/mapbox-gl-js repository.

The specification is reproduced here with details on the GeoTools MBStyle implementation. Where appropriate examples have been changed to reference GeoWebCache.

Documentation BSD license:

Copyright (c) 2016, Mapbox

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GeoTools

OSGeo

Sprite¶