You can create a pie plot chart using code or the designer. The following image shows a Pie Plot type chart.

For details on the API, see the PiePlotArea class.

The following class is also available:

• PieSeries

Using Code

1. Use the PieSeries class to add data to a Chart control.
2. Use the PiePlotArea class to create the plot area.
3. Set the location and size of the plot area.
4. Add the series to the plot area.
5. Create a label and legend for the chart.
6. Create a chart model and add the plot area, label, and legend to the model.
7. Create a chart and add the chart model to it.
8. Add the chart to the Spread control.

Example

The following example demonstrates using unbound data to create a Pie chart.

PieSeries series = new PieSeries();
series.SeriesName = "Series 0";
series.Values.Add(1.0);
series.Values.Add(2.0);
series.Values.Add(4.0);
series.Values.Add(8.0);
PiePlotArea plotArea = new PiePlotArea();
plotArea.Location = new PointF(0.2f, 0.2f);
plotArea.Size = new SizeF(0.6f, 0.6f);
plotArea.Series.Add(series);
LabelArea label = new LabelArea();
label.Text = "Pie Chart";
label.Location = new PointF(0.5f, 0.02f);
label.AlignmentX = 0.5f;
label.AlignmentY = 0.0f;
LegendArea legend = new LegendArea();
legend.Location = new PointF(0.98f, 0.5f);
legend.AlignmentX = 1.0f;
legend.AlignmentY = 0.5f;
ChartModel model = new ChartModel();
model.LabelAreas.Add(label);
model.LegendAreas.Add(legend);
model.PlotAreas.Add(plotArea);
FarPoint.Web.Spread.Chart.SpreadChart chart = new FarPoint.Web.Spread.Chart.SpreadChart();
chart.Model = model;
FpSpread1.Sheets[0].Charts.Add(chart);

Dim series As New FarPoint.Web.Chart.PieSeries()
series.SeriesName = "Series 0"
series.Values.Add(1.0)
series.Values.Add(2.0)
series.Values.Add(4.0)
series.Values.Add(8.0)
Dim plotArea As New FarPoint.Web.Chart.PiePlotArea()
plotArea.Location = New PointF(0.2F, 0.2F)
plotArea.Size = New SizeF(0.6F, 0.6F)
plotArea.Series.Add(series)
Dim label As New FarPoint.Web.Chart.LabelArea()
label.Text = "Pie Chart"
label.Location = New PointF(0.5F, 0.02F)
label.AlignmentX = 0.5F
label.AlignmentY = 0.0F
Dim legend As New FarPoint.Web.Chart.LegendArea()
legend.Location = New PointF(0.98F, 0.5F)
legend.AlignmentX = 1.0F
legend.AlignmentY = 0.5F
Dim model As New FarPoint.Web.Chart.ChartModel()
model.LabelAreas.Add(label)
model.LegendAreas.Add(legend)
model.PlotAreas.Add(plotArea)
Dim chart As New FarPoint.Web.Spread.Chart.SpreadChart()
chart.Model = model
FpSpread1.Sheets(0).Charts.Add(chart)

Using the Chart Designer

1. Select the PlotArea Collection editor.
2. Click the drop-down button on the right side of the Add button (lower, left side of dialog).
3. Select the PiePlotArea option and set properties as needed.
4. Select Apply and OK to close the Chart Designer.