override flat property

public/js/grijalva_charts.js

@@ -43,6 +43,14 @@ const getData = async (indicator) => {
     return data;
 }
 
+Object.defineProperty(Array.prototype, 'flat', {
+    value: function(depth = 1) {
+      return this.reduce(function (flat, toFlatten) {
+        return flat.concat((Array.isArray(toFlatten) && (depth>1)) ? toFlatten.flat(depth-1) : toFlatten);
+      }, []);
+    }
+});
+
 function makeIndicatorGraph() {
 
     let data = [],
@@ -73,7 +81,6 @@ function makeIndicatorGraph() {
         updateData;
 
     function chart(selection) {
-
         // get data ranges using values from displayName
         minDate = d3.min(data[0].values, d => {
             return d[displayName];
@@ -163,6 +170,8 @@ function makeIndicatorGraph() {
             // Calculate min and max values of data to define chart y-axis domain
             //let minDomain = d3.min(data.map(d => d.values).flat().map(d => d.value));
 
+            //console.log("data: ", data.map(d => d.values));
+
                 let maxDomain = d3.max(data.map(d => d.values).flat().map(d => d.value));
                 yLine.domain([0, maxDomain]).nice();
                 //yLine.domain([0, d3.max(data[0].values, d => d.value)]).nice();