/*phase coherence analysis*/
private void phaseCoherenceFuntion()
{
Console.WriteLine("Running phaseCohenrence...");
System.Diagnostics.Stopwatch watch2;; ///calc execution time
long elapsedMs2 = 0;
watch2 = System.Diagnostics.Stopwatch.StartNew(); ///calc execution time
List <double> std_list = new List <double>(); //store std(s)
List <double> norm_data = new List <double>(); //data after normalizing all its subsets
List <double> raw_data = IOFuncs.readStreamFile(txt_data_to_calc_W.Text);
int data_len = raw_data.Count;
int K_MAX = Convert.ToInt16(txt_period_max.Text);
for (int k = 1; k <= K_MAX; k++)//do calc std for each value of 'k'
{
//reset variables:
norm_data.Clear();
double[] sum_subsets = new double[k]; //store k sums
double[] mean_subsets = new double[k]; //store k means
int len_average_subset = data_len / k;
int remainder_len_subset = data_len % k;
/*calc mean for each subsets:*/
//find the sum(s):
for (int j = 0; j < data_len; j++)
{
sum_subsets[j % k] += raw_data[j];
}
//calc mean(s):
for (int i = 0; i < k; i++)
{
if (i < remainder_len_subset)
{
mean_subsets[i] = sum_subsets[i] / (len_average_subset + 1);
}
else
{
mean_subsets[i] = sum_subsets[i] / len_average_subset;
}
}
for (int i = 0; i < data_len; i++)
{
norm_data.Add(raw_data[i] - mean_subsets[i % k]);
}
//calc std then append it to std_list
std_list.Add(MathFuncs.CalcStdMeanZero(norm_data));
}//end for
double min = std_list.Min();
int period = std_list.FindIndex(n => Math.Abs(n - min) < 0.0000001);
watch2.Stop();
elapsedMs2 = watch2.ElapsedMilliseconds;
//print file to check:
IOFuncs.WriteFile_2(std_list, "std_list.csv");
txt_period.Text = period.ToString();
Console.WriteLine("DONE CALC PERIOD_ REF 7, time = " + elapsedMs2 + "; period = " + period);
}