private void Filter(NBarSeries bar)
{
NDataSeriesSubset subsetAll = new NDataSeriesSubset();
NDataSeriesSubset subsetFilter = new NDataSeriesSubset();
subsetAll.AddRange(0, bar.Values.Count - 1);
try
{
double dValue = Double.Parse(ValueTextBox.Text);
Nevron.Chart.CompareMethod method = (Nevron.Chart.CompareMethod)FilterDropDownList.SelectedIndex;
subsetFilter = bar.Values.Filter(method, dValue);
// apply red color only to the bars in the filter subset
foreach (int index in subsetFilter)
{
bar.FillStyles[index] = new NColorFillStyle(Color.Red);
}
}
catch
{
}
}
private void ApplyFilter_Click(object sender, System.EventArgs e)
{
double dValue;
string sFilter = "";
string sOperation = "";
// make all colors blue
ApplyColorToSubset(m_SubsetAll, Color.Blue);
try
{
dValue = Double.Parse(Value.Text);
}
catch
{
return;
}
Nevron.Chart.CompareMethod compareMethod = (Nevron.Chart.CompareMethod)compareMethodCombo.SelectedIndex;
NDataSeriesSubset subset = m_Bar.Values.Filter(compareMethod, dValue);
switch (compareMethodCombo.SelectedIndex)
{
case 0:
sFilter = "(> " + dValue.ToString() + ")";
break;
case 1:
sFilter = "(< " + dValue.ToString() + ")";
break;
case 2:
sFilter = "(==" + dValue.ToString() + ")";
break;
case 3:
sFilter = "(>=" + dValue.ToString() + ")";
break;
case 4:
sFilter = "(<=" + dValue.ToString() + ")";
break;
case 5:
sFilter = "(!=" + dValue.ToString() + ")";
break;
}
switch (subsetOperationCombo.SelectedIndex)
{
case 0: // replace
m_SubsetFilter = subset;
OperationList.Items.Clear();
sOperation = "f = ";
break;
case 1: // combine
m_SubsetFilter.Combine(subset);
sOperation = "f = f combine ";
break;
case 2: // intersect
m_SubsetFilter.Intersect(subset);
sOperation = "f = f intersect ";
break;
case 3: // subtract
m_SubsetFilter.Subtract(subset);
sOperation = "f = f subtract ";
break;
}
OperationList.Items.Add(sOperation + sFilter);
CurrentFilter.Text = m_SubsetFilter.ToString();
// apply red color only on the bars in the filter subset
ApplyColorToSubset(m_SubsetFilter, Color.Red);
nChartControl1.Refresh();
}