com.klg.jclass.chart
Interface ChartDataModel

All Known Subinterfaces:

EditableChartDataModel

All Known Implementing Classes:

BaseDataSource, JCChartSwingDataSource, JCEditableDataSource

public interface ChartDataModel

The core data model interface for JClass Chart.

In JClass Chart, data is specified in terms of data series. Chart asks for the x or y data for a particular series, and the data source implementing this class is expected to return an array of double values (double[]).

JClass Chart will attempt to recognize cases in which the same x data is returned for all series and then will re-use that data.

It is recommended that implementors honor the NumSeries property. Thus, be sure you can handle x or y data queries in the range 0 to NumSeries.

Point labels, series labels, and data source names are specified by implementing LabelledChartDataModel.

See Also:

LabelledChartDataModel

Field Summary

static int

ALL In certain contexts, used to specify all series or all points.

Method Summary

int	getNumSeries() Retrieves the number of data series.
double[]	getXSeries(int index) Retrieves the x values of the specified data series.
double[]	getYSeries(int index) Retrieves the y values of the specified data series.

Field Detail

ALL

public static final int ALL

In certain contexts, used to specify all series or all points.

See Also:

Constant Field Values

Method Detail

getXSeries

public double[] getXSeries(int index)

Retrieves the x values of the specified data series.

Parameters:

index - data series index

Returns:

array of double values representing x value data

getYSeries

public double[] getYSeries(int index)

Retrieves the y values of the specified data series.

Parameters:

index - data series index

Returns:

array of double values representing y value data

getNumSeries

public int getNumSeries()

Retrieves the number of data series.

Returns:

the number of data series