StatBean Name: DensityTrace

Purpose: Estimates the probability density function for a single column of numeric data.

DataSource: Any.

Read/Write Properties

Name	Type	Description	Possible Values	Default Value
columnNames	String array	The names of the columns (if more than one) to be analyzed.	One or more strings.	{""}
intervalWidth	int	Percentage of data used to estimate trace at each location.	1-99	40
method	String	Type of method used to estimate the trace.	"Boxcar","Cosine"	"Cosine"
resolution	int	For continuous distributions, the number of points at which the function is calculated.	50+	300
tablewiseExclusion	boolean	Whether all rows of the data table containing a missing value in any column should be excluded from the plot.	true,false	false
xVariableName	String	The name of the column with data values (if only one) to be plotted on the horizontal axis.	Any string.	""

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 chart bean
DensityTrace densitytrace1 = new STATBEANS.DensityTrace();

//set the column to be plotted
densitytrace1.setXVariableName("horsepower");

//show the plot
add(densitytrace1);

//make the plot bean a listener for changes in the FileDataSource bean
fileDataSource1.addDataChangeListener(densitytrace1.listenerForDataChange);

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