add code for creating the total sum layer for livestock

cloud_functions/earth_engine_tiler/src/geeAssets/common-styles-utils.ts

@@ -11,4 +11,19 @@ export const GriddedLivestockCommonStyles =
         '<ColorMapEntry color="#883886" quantity="5000" label="≤ 5,000" />' + 
         '<ColorMapEntry color="#390147" quantity="300000" label="> 5,000" />' + 
     '</ColorMap>' +
+'</RasterSymbolizer>'
+
+export const GriddedLivestockTotalStyle =
+
+'<RasterSymbolizer>' +
+    '<ColorMap type="ramp" extended="false">' +
+        '<ColorMapEntry color="#ffffff" quantity="0" label="0" />' +  
+        '<ColorMapEntry color="#b2ebf2" quantity="500" label="≤ 500" />' + 
+        '<ColorMapEntry color="#80deea" quantity="1000" label="≤ 1,000" />' + 
+        '<ColorMapEntry color="#68b0c3" quantity="5000" label="≤ 5,000" />' + 
+        '<ColorMapEntry color="#3f8b9c" quantity="10000" label="≤ 10,000" />' + 
+        '<ColorMapEntry color="#c766fc" quantity="50000" label="≤ 50,000" />' + 
+        '<ColorMapEntry color="#883886" quantity="100000" label="≤ 100,000" />' + 
+        '<ColorMapEntry color="#390147" quantity="10000000" label="> 100,000" />' + 
+    '</ColorMap>' +
 '</RasterSymbolizer>'

cloud_functions/earth_engine_tiler/src/geeAssets/gridded-livestock-total.ts

@@ -0,0 +1,54 @@
+import { CategoricalDataset } from './earth-engine-dataset';
+import ee from '@google/earthengine';
+import { EarthEngineUtils } from "../earth-engine-utils";
+import { GriddedLivestockBuffalo } from './gridded-livestock-buffalo';
+import { GriddedLivestockCattle } from './gridded-livestock-cattle';
+import { GriddedLivestockChicken } from './gridded-livestock-chicken';
+import { GriddedLivestockDuck } from './gridded-livestock-duck';
+import { GriddedLivestockGoat } from './gridded-livestock-goat';
+import { GriddedLivestockHorse } from './gridded-livestock-horse';
+import { GriddedLivestockPig } from './gridded-livestock-pig';
+import { GriddedLivestockSheep } from './gridded-livestock-sheep';
+import { GriddedLivestockTotalStyle } from "./common-styles-utils";
+
+export const GriddedLivestockTotal: CategoricalDataset = {
+    assetPath: {
+    },
+    bandName: 'b1',
+    sldStyles: GriddedLivestockTotalStyle,
+
+    areYearsValid(startYear?: number, endYear?: number): boolean {
+        // This Asset is static, and year selector is irrelevant
+        return true;
+    },
+
+    // Unmask(0) gives 0 to no data pixels so that they can be included in the sum
+    getEEAsset() {
+        const buffaloImage = ee.Image(GriddedLivestockBuffalo.assetPath.default).select(GriddedLivestockBuffalo.bandName).unmask(0);
+        const cattleImage = ee.Image(GriddedLivestockCattle.assetPath.default).select(GriddedLivestockCattle.bandName).unmask(0);
+        const chickenImage = ee.Image(GriddedLivestockChicken.assetPath.default).select(GriddedLivestockChicken.bandName).unmask(0);
+        const duckImage = ee.Image(GriddedLivestockDuck.assetPath.default).select(GriddedLivestockDuck.bandName).unmask(0);
+        const goatImage = ee.Image(GriddedLivestockGoat.assetPath.default).select(GriddedLivestockGoat.bandName).unmask(0);
+        const horseImage = ee.Image(GriddedLivestockHorse.assetPath.default).select(GriddedLivestockHorse.bandName).unmask(0);
+        const pigImage = ee.Image(GriddedLivestockPig.assetPath.default).select(GriddedLivestockPig.bandName).unmask(0);
+        const sheepImage = ee.Image(GriddedLivestockSheep.assetPath.default).select(GriddedLivestockSheep.bandName).unmask(0);
+
+        // Sum all the images
+        const totalImage = buffaloImage
+            .add(cattleImage)
+            .add(chickenImage)
+            .add(duckImage)
+            .add(goatImage)
+            .add(horseImage)
+            .add(pigImage)
+            .add(sheepImage);
+
+        return totalImage;
+    },
+
+    async getMapUrl(z, x, y) {
+        const image = this.getEEAsset().sldStyle(this.sldStyles);
+        const mapId = await EarthEngineUtils.getMapId(image);
+        return ee.data.getTileUrl(mapId, x, y, z);
+    },
+};

cloud_functions/earth_engine_tiler/src/index.ts

@@ -8,6 +8,7 @@ import {ModisNetPrimaryProductionChange} from './geeAssets/modis-net-primary-pro
 import {AnthropogenicBiomes} from './geeAssets/anthropogenic-biomes';
 import {LivestockProductionSystems} from './geeAssets/livestock-production-systems';
 import {ForestLoss} from './geeAssets/forest-loss';
+import {GriddedLivestockTotal} from './geeAssets/gridded-livestock-total'; 
 import {GriddedLivestockBuffalo} from './geeAssets/gridded-livestock-buffalo'; 
 import {GriddedLivestockCattle} from './geeAssets/gridded-livestock-cattle';
 import {GriddedLivestockChicken} from './geeAssets/gridded-livestock-chicken'; 
@@ -29,6 +30,7 @@ const assets: Record<Tilesets, EarthEngineDataset> = {
   [Tilesets.anthropogenic_biomes]: AnthropogenicBiomes,
   [Tilesets.livestock_production_systems]: LivestockProductionSystems,
   [Tilesets.forest_loss]: ForestLoss,
+  [Tilesets.gridded_livestock_total]: GriddedLivestockTotal,
   [Tilesets.gridded_livestock_buffalo]: GriddedLivestockBuffalo,
   [Tilesets.gridded_livestock_cattle]: GriddedLivestockCattle,
   [Tilesets.gridded_livestock_chicken]: GriddedLivestockChicken,

cloud_functions/earth_engine_tiler/src/tile-request.dto.ts

@@ -7,6 +7,7 @@ export enum Tilesets {
   anthropogenic_biomes = "anthropogenic_biomes",
   livestock_production_systems = "livestock_production_systems",
   forest_loss = "forest_loss",
+  gridded_livestock_total = "gridded_livestock_total",
   gridded_livestock_buffalo = "gridded_livestock_buffalo",
   gridded_livestock_cattle = "gridded_livestock_cattle",
   gridded_livestock_chicken = "gridded_livestock_chicken",