correction for incorrect summed graph title calculation

yafitsv/public/javascript/olqv_utils.js

@@ -238,3 +238,19 @@ function EXIT() {
   }
   console.log(result + ": exiting");
 }
+
+/**
+  Returns the index of the closest element in the array 
+  for tyhe given value or null if not found
+*/
+function getIndex(array, value){
+  for(let i = 0; i < array.length; i++){
+    if(value >= array[i] && value < array[i+1]){
+      if(Math.abs(array[i+1]-value) > Math.abs(array[i]-value))
+        return i;
+      else
+        return i+1;
+    }
+  }
+  return null;
+}
\ No newline at end of file