StatBean Name: ContourPlot

Purpose: Creates contour plots for a response surface.

DataSource: any.

Read/Write Properties

Name	Type	Description	Possible Values	Default Value
addPoints	boolean	Whether to add points around the surface.	true,false	false
contoursBy	double	The distance between the contours.	Any double > 0.	missing
contoursFrom	double	The level at which the first contour should be plotted.	Any double.	missing (causes default scaling)
contoursTo	double	The level at which the last contour should be plotted.	Any double > contoursFrom.	missing
contourType	String	The type of contours to be plotted.	"Lines", "Regions"	"Regions"
gridSize	int	The number of values along each dimension of the matrix which defines the surface.	2+	21
xMaximum	double	The maximum value of X in the grid matrix.	Any double > xMinimum.	1.0
xMinimum	double	The minimum value of X in the grid matrix.	Any double.	0.0
xVariableName	String	The name of the column with data values to be plotted (if any).	Any string.	"X"
yMaximum	double	The maximum value of Y in the grid matrix.	Any double > yMinimum.	1.0
yMinimum	double	The minimum value of Y in the grid matrix.	Any double.	0.0
yVariableName	String	The name of the column with data values to be plotted (if any).	Any string.	"Y"

Other properties are inherited from the java.awt.Canvas class and from the general GraphicalStatbean class.

Code Sample

//create a datasource bean
FileDataSource fileDataSource1 = new STATBEANS.FileDataSource();

//set the file name to be read
fileDataSource1.setFileName("c:\\statbeans\\samples\\cardata.txt");

//create a plot bean
ContourPlot contourPlot1 = new STATBEANS.ContourPlot();

//set limits for the x and y dimensions
double xmin=0.0;
double xmax=10;
double ymin=0.0;
double ymax=20.0;
contourPlot1.setXMinimum(xmin);
contourPlot1.setXMaximum(xmax);
contourPlot1.setYMinimum(ymin);
contourPlot1.setYMaximum(ymax);

//set the number of points along each axis
int n=41;
contourPlot1.setGridSize(n);

//create a matrix with the height of the surface
double grid[][]=new double[n][n];
for(int i=0; i<n; i++)
{
double x=xmin+i*xmax/(n-1);
for(int j=0; j<n; j++)
{
double y=ymin+j*ymax/(n-1);
grid[i][j]=200.0+3*(x-5)*(x-5)-2*(y-10)*(y-10);
}
}
contourPlot1.setSurfaceGrid(grid);

//position the legend
contourPlot1.setLegendVerticalPosition(1.1);
contourPlot1.setLegendHorizontalPosition(1.1);

//add the plot to the application frame
add(contourPlot1);

//make the plot a listener for changes in the ProgramDataSource bean
programDataSource1.addDataChangeListener(contourPlot1.listenerForDataChange);

//notify all listeners
programDataSource1.updateListeners();