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tilelive-imageserver

This is a tilelive source for ArcGIS ImageServer endpoints.

The documentation used for implementation is here.

Usage

imageserver: URIs are supported, with the following parameters available:

  • source: the ImageServer URL
  • rasterFunction: the rasterFunction provided by the source server to apply to the data. (Optional)
  • minzoom: optional, default 0
  • maxzoom: optional, default 14
  • baseTileSize: base tile size in pixels (default 256)
  • scale: integer to scale base tile size (default 1)
  • format: image format, currently png and jpg are supported.

Examples:

  • USGS 3DEP Multidimensional Hillshade: imageserver:///?source=https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer/&rasterFunction=Hillshade Multidirectional&maxzoom=14

Source/Data Testing

Local testing:

  1. node test.js should place a single tile in the root directory if sucessful.

Testing with tessera:

  1. Install this source globally with npm install -g .
  2. Install tessera
  3. Run tessera with the tilelive module included: tessera --require=tilelive-imageserver "imageserver:///?source=https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer/&rasterFunction=Hillshade Multidirectional&maxzoom=14"
  4. View localhost:8080 in browser