New function: remove missing observations

Currently, this function is only available in the scope of the
function that formats observations for the scatter plot chart.

Remove the missing observations from the first (larger) array.

public/js/appChart.js

@@ -869,6 +869,29 @@ const formatSTAResponseForScatterPlot = function (obsArrayOne, obsArrayTwo) {
     missingTimestamp,
     obsArrayOneTimestamp
   );
+
+  /**
+   *
+   * @param {*} missingIndexesArr An array of the indexes of the observations missing from the second set of observations
+   * @param {*} obsOneArr An array of the first set of observations (timestamp + value)
+   * @returns {undefined}
+   */
+  const removeMissingObservationFromFirstArray = function (
+    missingIndexesArr,
+    obsOneArr
+  ) {
+    missingIndexesArr.forEach((index) => {
+      if (index > -1) {
+        obsOneArr.splice(index, 1);
+      }
+    });
+  };
+
+  removeMissingObservationFromFirstArray(
+    indexesMissingObsArr,
+    obsArrayOneChecked
+  );
+  console.log(obsArrayOneChecked.length);
 };
 
 (async () => {