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BiPlot Class
BiPlot Constructor  BiPlot Methods  BiPlot Properties  BiPlot Members  Classes  Example
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The 2D Bi-Plot. Can be used to visualize 2D vectors, for example first two components in PCA of FA.

Class Hierarchy
Dew_Stats_Tee_BiPlot
Syntax
C#
Visual Basic
public class BiPlot : Points;
File

BiPlot.cs

Remarks

Biplots are statistical graphics that represent in the same plane both the variables and the cases. Usually variables are represented by arrows, while points represent cases. A Biplot can be constructed from a data matrix, where conventionally each column represent a variable, and each row includes the variables value for a given case.

Example

Use biplot to visually analyze the results of PCA.

private Dew.Stats.TMtxPCA tMtxPCA1; private Steema.TeeChart.Styles.Points points1; private Dew.Stats.Tee.BiPlot biplot1; points1 = new Steema.TeeChart.Styles.Points(tChart1.Chart); points1.Title = "Scores"; points1.Pointer.Style = Steema.TeeChart.Styles.PointerStyles.Diamond; biplot1 = new Dew.Stats.Tee.BiPlot(tChart1.Chart); biplot1.Title = "Coefficients"; biplot1.Pointer.Style = Steema.TeeChart.Styles.PointerStyles.Circle; biplot1.Marks.Visible = true; biplot1.FilledArrows = true; biplot1.Marks.ShapeStyle = Steema.TeeChart.Drawing.TextShapeStyle.RoundRectangle; tMtxPCA1.Recalc(); points1.Clear(); biplot1.Clear(); biplot1.GetHorizAxis.Labels.Style = Steema.TeeChart.AxisLabelStyle.Value; // plot scores - regular point series for (int i = 0; i <tMtxPCA1.ZScores.Rows; i++) points1.Add(tMtxPCA1.ZScores.Values[i, 0], tMtxPCA1.ZScores.Values[i, 1]); // plot eigevectors (2d subspace) for (int i = 0; i <tMtxPCA1.PC.Cols; i++) biplot1.Add(tMtxPCA1.PC.Values[0,i], tMtxPCA1.PC.Values[1,i],i.ToString());
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