This sample defines a rendering rule to dynamically modify and display the raster data from an image service.
Rendering rules are created using a pre-defined set of raster functions. This example shows a raster image generated from raw LIDAR (Light Detection and Ranging) data rendered with a hillshade. To learn more about defining rules, go to L.esri.image in the API reference.
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Define a rendering rule</title> <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no"> <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" crossorigin=""> <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" crossorigin=""></script> <!-- Load Esri Leaflet from CDN --> <script src="https://unpkg.com/esri-leaflet@3.0.19/dist/esri-leaflet.js"></script> <!-- Load Esri Leaflet Vector from CDN --> <script src="https://unpkg.com/esri-leaflet-vector@4.3.2/dist/esri-leaflet-vector.js" crossorigin=""></script> <style> html, body, #map { padding: 0; margin: 0; height: 100%; width: 100%; font-family: Arial, Helvetica, sans-serif; font-size: 14px; color: #323232; } </style> </head> <body> <div id="map"></div> <script> const accessToken = "YOUR_ACCESS_TOKEN"; const renderingRule = { rasterFunction: "TorontoFalseColor", variableName: "Raster" }; const map = L.map("map").setView([43.645262, -79.38], 14); L.esri.Vector.vectorBasemapLayer("arcgis/imagery", { token: accessToken }).addTo(map); L.esri .imageMapLayer({ url: "https://sampleserver6.arcgisonline.com/arcgis/rest/services/Toronto/ImageServer", renderingRule: renderingRule, useCors: false, attribution: "GeoEye Inc." }) .addTo(map); </script> </body> </html>