OPM-Leaflet

Leaflet plugin to handle OpenPlanetaryMap (OPM) basemaps. OPM datasets may be added in the future.

Setting Up

1. Include Leaflet JavaScript and CSS (either a hosted or downloaded version).
2. Initialise a map.
3. Include the file OPMBasemaps.js before the map initialisation script; this contains the main OPM basemaps.
4. Include the file OPMLayers.js after the map initialisation script; this contains customisation options.
5. To change the initial basemaps / overlay, add the layers to the map in OPMLayers.js. All OPM layer names are listed below:
   • basemapOPMVector (OPM Vector)
   • basemapTexture (Shaded Mars Surface Texture)
   • basemapMOLAGrey (Shaded Grayscale MOLA Elevation)
   • basemapMOLAColor (Shaded Colour MOLA Elevation)
   • basemapViking (Global Viking MDIM2.1 Colorized Mosaic)
   • basemapHillshade (Global Hillshade)
   • overlay (Labels)

Example

See below for example implementation. A working example can be found in the /examples folder, also at openplanetary.co/opm-leaflet.

<!-- Leaflet JS and CSS -->
<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css">
<script src="https://unpkg.com/[email protected]/dist/leaflet.js"></script>

<!-- OPM Plugin basemaps -->
<script src="src/OPMBasemaps.js"></script>

<!-- Initialise map -->
<script>
  const map = L.map('map', {
    center: [0, 0],
    maxBounds: [
      [-90, -Infinity],
      [90, Infinity],
    ],
    maxBoundsViscosity: 0.5
  }).setView([11.8, -45.04], 3);
</script>

<!-- OPM Plugin layer options -->
<script src="src/OPMLayers.js"></script>