update example

examples/ra_getCoefficientOfVariation/ra_getCoefficientOfVariation.ino

@@ -11,6 +11,12 @@
 RunningAverage myRA(10);
 int samples = 0;
 
+
+RunningAverage A(60);
+RunningAverage B(60);
+RunningAverage C(60);
+
+
 void setup(void)
 {
   Serial.begin(115200);
@@ -35,32 +41,54 @@ void setup(void)
     Serial.println(myRA.getCoefficientOfVariation(), 3);
   }
   Serial.println();
-}
 
 
-void loop(void)
-{
-  long rn = random(0, 1000);
-  myRA.addValue(rn * 0.1);
-  samples++;
+  Serial.println();
+  Serial.println("Show effect of changing average and standard deviation.");
+  Serial.println("- A is reference");
+  Serial.println("- B has same stdev, distribution is 'smaller' (sharper)");
+  Serial.println("- C has same average, distribution is 'wider'");
+  Serial.println();
+
+  A.clear();
+  B.clear();
+  C.clear();
+
+  for (int i = 0; i <= 50; i++)
+  {
+    A.add((i - 25) * 1.0 + 100);  //  reference
+    B.add((i - 25) * 1.0 + 200);  //  change average
+    C.add((i - 25) * 3.0 + 100);  //  change stddev
+  }
+  Serial.println("\tA\tB\tC");
+  Serial.print("AVG\t");
+  Serial.print(A.getAverage(), 3);
+  Serial.print("\t");
+  Serial.print(B.getAverage(), 3);
+  Serial.print("\t");
+  Serial.println(C.getAverage(), 3);
 
-  Serial.print(samples);
-  Serial.print("\t Running Average: ");
-  Serial.print(myRA.getAverage(), 3);
+  Serial.print("STDEV\t");
+  Serial.print(A.getStandardDeviation(), 3);
+  Serial.print("\t");
+  Serial.print(B.getStandardDeviation(), 3);
   Serial.print("\t");
-  Serial.print(myRA.getStandardDeviation(), 3);
+  Serial.println(C.getStandardDeviation(), 3);
+
+  Serial.print("COFVAR\t");
+  Serial.print(A.getCoefficientOfVariation(), 3);
   Serial.print("\t");
-  Serial.print(myRA.getStandardDeviation() / myRA.getAverage(), 3);
+  Serial.print(B.getCoefficientOfVariation(), 3);
   Serial.print("\t");
-  Serial.println(myRA.getCoefficientOfVariation(), 3);
+  Serial.println(C.getCoefficientOfVariation(), 3);
 
-  if (samples >= 300)
-  {
-    samples = 0;
-    myRA.clear();
-    Serial.println();
-  }
-  delay(10);
+
+  delay(10000);
+}
+
+
+void loop(void)
+{
 }