com.java4less.rchart
Class BarPlotter

java.lang.Object
  |
  +--com.java4less.rchart.ChartComponent
        |
        +--com.java4less.rchart.Plotter
              |
              +--com.java4less.rchart.BarPlotter

public class BarPlotter

extends Plotter

Plotter used to draw a bar chart. It only accepts DataSeries of type BarDataSerie.

Example of use:

// data
double[] d1={1,2,3,4,5,4,2};
BarDataSerie data1= new BarDataSerie(d1,new FillStyle(GraphicsProvider.getColor(ChartColor.CYAN)));
data1.border=new LineStyle(0.2f,GraphicsProvider.getColor(ChartColor.BLACK),LineStyle.LINE_NORMAL);
//data1.borderType=BarDataSerie.BORDER_RAISED;
data1.border=new LineStyle(0.2f,GraphicsProvider.getColor(ChartColor.BLACK),LineStyle.LINE_NORMAL);
data1.valueFont=GraphicsProvider.getFont("Arial",ChartFont.BOLD,10);

double[] d2={-2,3,4,4.2,6.4,4.5,6.1};
BarDataSerie data2= new BarDataSerie(d2,new FillStyle(GraphicsProvider.getColor(ChartColor.GREEN)));
data2.valueFont=GraphicsProvider.getFont("Arial",ChartFont.BOLD,10);
data2.border=new LineStyle(0.2f,GraphicsProvider.getColor(ChartColor.BLACK),LineStyle.LINE_NORMAL);
data2.negativeStyle=new FillStyle(GraphicsProvider.getColor(ChartColor.RED));

Legend l=new Legend();
l.border=new LineStyle(0.2f,GraphicsProvider.getColor(ChartColor.BLACK),LineStyle.LINE_NORMAL);
l.addItem("Company A",new FillStyle(GraphicsProvider.getColor(ChartColor.CYAN)));
l.addItem("Company B",new FillStyle(GraphicsProvider.getColor(ChartColor.GREEN)));

// create title
Title title=new Title("Benefits companies A & B");
// create axis
Axis  XAxis=new Axis(Axis.HORIZONTAL,new Scale());
Axis  YAxis=new Axis(Axis.VERTICAL,new Scale());
XAxis.tickAtBase=true; // draw also first tick
XAxis.scale.min=-3;
XAxis.scale.max=7;
YAxis.scale.min=0;
YAxis.scale.max=7;
YAxis.IntegerScale=true;
YAxis.scaleTickInterval=1;
XAxis.scaleTickInterval=1;
XAxis.gridStyle=new LineStyle(0.2f,GraphicsProvider.getColor(ChartColor.WHITE),LineStyle.LINE_DOTS);
YAxis.gridStyle=new LineStyle(0.2f,GraphicsProvider.getColor(ChartColor.WHITE),LineStyle.LINE_DOTS);
String[] lbls={"1998","1999","2000","2001","2002","2003","2004","2005"};
YAxis.tickLabels=lbls;

HAxisLabel XLabel= new HAxisLabel("million $",GraphicsProvider.getColor(ChartColor.BLACK),GraphicsProvider.getFont("Arial",ChartFont.BOLD,12));
VAxisLabel YLabel= new VAxisLabel("Year",GraphicsProvider.getColor(ChartColor.BLACK),GraphicsProvider.getFont("Arial",ChartFont.BOLD,12));

// plotter
BarPlotter plot=new BarPlotter();
plot.verticalBars=false;
plot.interBarSpace=0;

// create chart
Chart chart=new Chart(title,plot,XAxis,YAxis);
chart.XLabel=XLabel;
chart.YLabel=YLabel;
chart.legend=l;
chart.addSerie(data2);
chart.addSerie(data1);
chart.back=new FillStyle(GraphicsProvider.getColor(ChartColor.LIGHTGRAY));

Field Summary

boolean	barAtAxis first bar at the axis
double	barsBase start bars at this position
int	barWidth Width of the bar.
boolean	cumulative If true the bars will be display on the top of each other to create a stack bar chart.
boolean	cumulativeBackwardsCompatible leave it to the default (false) unless you are upgrading your version of RChart and you want the values not to be automatically acumulated.
boolean	eventChart set it to true if you want to draw event charts.
int	interBarSpace space between two bars (pixels).
double	InterGroupSpace space between two groups of bars (pixels).
boolean	summedLabels if true labels will be the summed values of the bars
boolean	verticalBars this fields indicates whether bars (horizontal) or columns (vertical) should be used.

Fields inherited from class com.java4less.rchart.Plotter

back, backImage, depth, visibleHeight, visibleWidth, XScale, Y2Scale, YScale

Fields inherited from class com.java4less.rchart.ChartComponent

height, width, x, y

Constructor Summary

BarPlotter()

Method Summary

void	addSerie(DataSerie s) adds a serie to the plotter.

Methods inherited from class com.java4less.rchart.Plotter

getCombinable, getNeedsAxis, getSerie, getSeriesCount, plot, plotBackground, replaceSerie, setSerie

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

verticalBars

public boolean verticalBars

this fields indicates whether bars (horizontal) or columns (vertical) should be used.

barWidth

public int barWidth

Width of the bar. This will be automatically calculated if not specified (pixels).

interBarSpace

public int interBarSpace

space between two bars (pixels).

InterGroupSpace

public double InterGroupSpace

space between two groups of bars (pixels). This will be automatically calculated if not specified.

cumulative

public boolean cumulative

If true the bars will be display on the top of each other to create a stack bar chart. Previous versions of RChart do not acumulate the values. the current version will automatically acumulate the values. If you don't want this to happen set cumulativeBackwardsCompatible

summedLabels

public boolean summedLabels

if true labels will be the summed values of the bars

eventChart

public boolean eventChart

set it to true if you want to draw event charts. E

barsBase

public double barsBase

start bars at this position

cumulativeBackwardsCompatible

public boolean cumulativeBackwardsCompatible

leave it to the default (false) unless you are upgrading your version of RChart and you want the values not to be automatically acumulated. See cumulative.

barAtAxis

public boolean barAtAxis

first bar at the axis

Constructor Detail

BarPlotter

public BarPlotter()

Method Detail

addSerie

public void addSerie(DataSerie s)

adds a serie to the plotter. Only BarDataSerie are allowed.

Overrides:

addSerie in class Plotter