SurfacePlot Statbean®

Other properties for creating a 3D surface chart 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 
SurfacePlot surfacePlot1 = new STATBEANS.SurfacePlot(); 

//set limits for the x and y dimensions 
double xmin=0.0; 
double xmax=5000; 
double ymin=0.0; 
double ymax=180.0; 
surfacePlot1.setXMinimum(xmin); 
surfacePlot1.setXMaximum(xmax); 
surfacePlot1.setYMinimum(ymin); 
surfacePlot1.setYMaximum(ymax); 

//set the number of points along each axis 
int n=11; 
surfacePlot1.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]=47.75-0.0065*x-0.0467*y; 
} 
} 
surfacePlot1.setSurfaceGrid(grid); 

//set the surface type to contoured 
surfacePlot1.setSurfaceType("Contoured"); 

//add point to the plot 
surfacePlot1.setZVariableName("mpg"); 
surfacePlot1.setXVariableName("weight"); 
surfacePlot1.setYVariableName("horsepower"); 
surfacePlot1.setAddPoints(true); 

//position the legend 
surfacePlot1.setLegendVerticalPosition(1.3); 
surfacePlot1.setLegendHorizontalPosition(1.0); 

//don't show powers on the x-axis 
surfacePlot1.setXaxisPower(false); 

//add the plot to the application frame 
add(surfacePlot1); 

//make the plot a listener for changes in the FileDataSource bean 
fileDataSource1.addDataChangeListener(surfacePlot1.listenerForDataChange); 

//instruct the fileDataSource bean to read the file 
fileDataSource1.readData();