private void button1_Click(object sender, EventArgs e)
{
foreach (int n in listDS.SelectedIndices)
{
dataList = new List <double>();
foreach (double[] dataRow in myVal)
{
if (dataRow != null)//if rows were ommitted in row prepare, then there will be null arrays in myVal
{
dataList.Add(dataRow[n]);
}
}
result = Mathtool.GetDescriptiveStat(dataList);
FrmMain.Instance.descriptiveStatResults(result, colNames[n], clearData); //colNames populated by GetVList
}
FrmMain.Instance.Refresh();
FormDS.instance.Close();
Debug.WriteLine(FormDS.instance);
}
public void descriptiveStatResults(DescriptiveStat newResult, string index, bool clearData)
//^populates the textbox on results tab with results from the FormDS
{
if (clearData)
{
tcStat.Text = "";
}
txtStat.Text += "For " + index +
", Max: " + newResult.max.ToString("#.##") +
", Min: " + newResult.min.ToString("#.##") +
", Sum: " + newResult.sum.ToString("#.##") +
", Average: " + newResult.avg.ToString("#.##") +
", Variance: " + newResult.var.ToString("#.##") +
", Standard Deviation: " + newResult.stddev.ToString("#.##") +
", 1/4 Percentile: " + newResult.percentile1Quarter.ToString("#.##") +
", 3/4 Percentile: " + newResult.percentile3Quarter.ToString("#.##") +
"." + Environment.NewLine;
tcStat.SelectedTab = tp2;
}
public static DescriptiveStat GetDescriptiveStat(List <double> data)
{
DescriptiveStat result = new DescriptiveStat();
double sqSum = 0, loopMax, loopMin;
result.sum = 0;
int n = data.Count;
List <double> maxes = new List <double>();
List <double> mins = new List <double>();
int maxIndex, minIndex;
while (data.Count > 2)
{
loopMax = data[0];
loopMin = data[0];
maxIndex = 0;
minIndex = 0;
foreach (double d in data)
{
if (d > loopMax)
{
loopMax = d;
maxIndex = data.IndexOf(d);
}
if (d < loopMin)
{
loopMin = d;
minIndex = data.IndexOf(d);
}
}
result.sum += loopMax + loopMin;
sqSum += Math.Pow(loopMin, 2) + Math.Pow(loopMax, 2);
maxes.Insert(0, loopMax);
mins.Add(loopMin);
if (maxIndex > minIndex)
{
data.RemoveAt(maxIndex);
data.RemoveAt(minIndex);
}
else
{
data.RemoveAt(minIndex);
data.RemoveAt(maxIndex);
}
}
if (data.Count == 2)
{
mins.Add(data.Min());
}
maxes.Add(data.Max());
result.median = maxes[0];
data.Clear();
data.AddRange(mins);
data.AddRange(maxes);
result.max = data[n - 1];
result.min = data[0];
result.avg = result.sum / n;
result.var = (sqSum - n * Math.Pow(result.avg, 2)) / n;
result.stddev = Math.Sqrt(result.var);
for (int i = 0; i < data.Count; i++)
{
double percentile = ((double)i / (double)n);
if (percentile > .25 && result.percentile1Quarter == 0)
{
result.percentile1Quarter = data[i];
}
if (percentile > .75 && result.percentile3Quarter == 0)
{
result.percentile3Quarter = data[i];
}
}
return(result);
}
