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HTML 

              
                <html>
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
    <title>Intro to ImageryLayer | Sample | ArcGIS API for JavaScript 4.23</title>

    <link rel="stylesheet" href="https://js.arcgis.com/4.23/esri/themes/light/main.css" />
    <script src="https://js.arcgis.com/4.23/"></script>

    <style>
      html,
      body,
      #viewDiv {
        padding: 0;
        margin: 0;
        height: 100%;
        width: 100%;
      }
    </style>

    <script>
      require([
        "esri/Map",
        "esri/views/MapView",
        "esri/layers/ImageryLayer",
        "esri/layers/support/RasterFunction"
      ], (Map, MapView, ImageryLayer, RasterFunction) => {
        const slope = new RasterFunction({
          functionName: 'Slope Degrees',
        })

        const rasterClip = new RasterFunction({
          functionName: 'Clip',
          functionArguments: {
            ClippingGeometry: {"spatialReference":{"latestWkid":3857,"wkid":102100},"rings":[[[-12347054.018395461,3747660.64982666],[-12332536.357499849,3747642.884189226],[-12332249.867934851,3734580.5126524474],[-12347121.050086282,3734725.6235733326],[-12347054.018395461,3747660.64982666]]]},
            ClippingType: 1,
            Raster: slope
          }
        })
        
        const water = new RasterFunction({
          functionName: 'Remap',
          functionArguments: {
            InputRanges: [0, 100],
            OutputValues: [50],
            GeometryType: 'esriGeometryEnvelope',
            Geometries: [
              {
                spatialReference: { latestWkid: 3857, wkid: 102100 },
                "rings": [ [ [ -12341994.5440037, 3742276.467355759 ], [ -12338522.929441707, 3742369.6249839813 ], [ -12338398.719270743, 3740046.954503397 ], [ -12341963.939334173, 3740131.453249509 ], [ -12341994.5440037, 3742276.467355759 ] ] ]
              }
            ],
            Raster: slope
          }
        })
        
        
        
        const layer = new ImageryLayer({
          url: "https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer",
          renderingRule: water,
          pixelFilter: colorize
        });

        /**************************
         * Add image layer to map
         *************************/

        const map = new Map({
          basemap: "satellite",
          layers: [layer]
        });

        const view = new MapView({
          container: "viewDiv",
          map: map,
          center: [-110.88527305333872, 31.838175304063586],
          zoom: 12
        });
        
        function colorize(pixelData) {
          if (
            pixelData === null ||
            pixelData.pixelBlock === null ||
            pixelData.pixelBlock.pixels === null
          ) {
            return
          }

          const pixelBlock = pixelData.pixelBlock

          // The pixels visible in the view
          const pixels = pixelBlock.pixels
          let mask = pixelBlock.mask

          // The number of pixels in the pixelBlock
          const numPixels = pixelBlock.width * pixelBlock.height

          // Get the pixels containing temperature values in the only band of the data
          const p1 = pixels[0]

          const rBand = new Uint8Array(p1.length)
          const gBand = new Uint8Array(p1.length)
          const bBand = new Uint8Array(p1.length)

          // Loop through all the pixels in the view
          for (let i = 0; i < numPixels; i++) {
            // skip noData pixels
            if (mask[i] === 0) {
              continue
            }

            if (p1[i] === 50) {
              rBand[i] = 0
              gBand[i] = 255
              bBand[i] = 0
            } else {
              rBand[i] = 255
              gBand[i] = 0
              bBand[i] = 0
            }
          }

          // Set the new pixel values on the pixelBlock
          pixelData.pixelBlock.pixels = [rBand, gBand, bBand] // assign rgb values to each pixel
          pixelData.pixelBlock.statistics = null
          pixelData.pixelBlock.pixelType = 'u8'
        }
      });
    </script>
  </head>

  <body>
    <div id="viewDiv"></div>
  </body>
</html>
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