Update SkySat scripts (#309)

* PlanetScope NDVI: update script.js

* PlanetScope NDVI: add eob.js

* PlanetScope NDVI: add raw.js

* PlanetScope NDVI: add scripts to readme.md

* improve eob script for skysat

* improve raw script for skysat

* improve default script for skysat

Author: zcernigoj

skysat/ndvi/README.md

@@ -5,6 +5,13 @@ grand_parent: Planet
 layout: script
 permalink: /skysat/ndvi/
 nav_exclude: true
+scripts:
+- - Visualization
+  - script.js
+- - EO Browser
+  - eob.js
+- - Raw Values
+  - raw.js
 ---
 
 

skysat/ndvi/eob.js

@@ -0,0 +1,38 @@
+//VERSION=3
+// NDVI
+
+function setup() {
+  return {
+    input: ["Red", "NIR", "dataMask"],
+    output: [
+      { id: "default", bands: 4 },
+      { id: "index", bands: 1, sampleType: "FLOAT32" },
+      { id: "eobrowserStats", bands: 2, sampleType: "FLOAT32" },
+      { id: "dataMask", bands: 1 },
+    ]
+  }
+}
+
+function evaluatePixel(sample) {
+  let NDVI = index(sample.NIR, sample.Red);
+  const indexVal = isFinite(NDVI) && sample.dataMask === 1 ? NDVI : NaN;
+  let id_default = valueInterpolate(NDVI,
+    [0, 0.2, 0.3, 0.4, 0.5, 1.0],
+    [
+      [1, 1, 0.88],
+      [0.57, 0.75, 0.32],
+      [0.44, 0.64, 0.25],
+      [0.31, 0.54, 0.18],
+      [0.19, 0.43, 0.11],
+      [0.06, 0.33, 0.04],
+      [0, 0.27, 0],
+    ]
+  );
+
+  return {
+    default: [...id_default, sample.dataMask],
+    index: [indexVal],
+    eobrowserStats: [indexVal, sample.dataMask],
+    dataMask: [sample.dataMask],
+  };
+}

skysat/ndvi/raw.js

@@ -0,0 +1,16 @@
+//VERSION=3
+// NDVI
+
+function setup() {
+  return {
+    input: ["Red", "NIR"],
+    output: [
+      { id: "default", bands: 1 },
+    ]
+  }
+}
+
+function evaluatePixel(sample) {
+  let NDVI = index(sample.NIR, sample.Red);
+  return { default: [NDVI] };
+}

skysat/ndvi/script.js

@@ -1,22 +1,30 @@
 //VERSION=3
+// NDVI
+
 function setup() {
   return {
-    input: ["red", "nir", "dataMask"],
-    output: { bands: 4 }
+    input: ["Red", "NIR", "dataMask"],
+    output: [
+      { id: "default", bands: 4 },
+    ]
   }
 }
-var f = 10000
+
 function evaluatePixel(sample) {
-  var NDVI = index(sample.nir, sample.red)
-  return valueInterpolate(NDVI,
+  let NDVI = index(sample.NIR, sample.Red);
+  let id_default = valueInterpolate(NDVI,
     [0, 0.2, 0.3, 0.4, 0.5, 1.0],
     [
-      [1, 1, 0.88, sample.dataMask],
-      [0.57, 0.75, 0.32, sample.dataMask],
-      [0.44, 0.64, 0.25, sample.dataMask],
-      [0.31, 0.54, 0.18, sample.dataMask],
-      [0.19, 0.43, 0.11, sample.dataMask],
-      [0.06, 0.33, 0.04, sample.dataMask],
-      [0, 0.27, 0, sample.dataMask],
-    ])
+      [1, 1, 0.88],
+      [0.57, 0.75, 0.32],
+      [0.44, 0.64, 0.25],
+      [0.31, 0.54, 0.18],
+      [0.19, 0.43, 0.11],
+      [0.06, 0.33, 0.04],
+      [0, 0.27, 0],
+    ]);
+
+  return {
+    default: [...id_default, sample.dataMask],
+  };
 }