org.faceless.graph
Class FloatingBarGraph

java.lang.Object
  extended by org.faceless.graph.Graph
      extended by org.faceless.graph.AxesGraph
          extended by org.faceless.graph.AbstractBarGraph
              extended by org.faceless.graph.FloatingBarGraph

public class FloatingBarGraph
extends AbstractBarGraph

A type of Bar graph where the bars float above the axis. It's used to show a range of values, with the average, median or some other value in the middle. The graph only extends along the X axis (i.e. it has no depth).

There are two datasets defined, called MIN and MAX (for the bottom and top parts of the bar). You can change the colors of these sets with setColor("MIN", color)

Here's an example showing a simple FloatingBarGraph.

    import org.faceless.graph.output.ImageOutput;
    import java.awt.Color;

    // Create a new Floating Bar Graph and
    // set the color of the bars.
    //
    FloatingBarGraph g = new FloatingBarGraph();
    g.optionTitle("My First Floating Bar Graph");
    g.setColor("MIN", Color.yellow);
    g.setColor("MAX", Color.green);

    // Add some bars to the graph. The averages
    // in this example aren't very useful...
    //
    g.set("Cabbages", 10, (10+18)/2, 18);
    g.set("Cauliflower", 12, (12+19)/2, 19);
    g.set("Courgettes", 11, (11+15)/2, 15);

    // Render to an image that's 400x400
    //
    ImageOutput out = new ImageOutput(400,400);
    out.render(g);
 


Field Summary
 
Fields inherited from class org.faceless.graph.AbstractBarGraph
DISPLAYVALUE_INSIDETOP, DISPLAYVALUE_MIDDLE, DISPLAYVALUE_NONE, DISPLAYVALUE_TOP
 
Fields inherited from class org.faceless.graph.Graph
KEY_BOXED_BOTTOM, KEY_BOXED_LEFT, KEY_BOXED_RIGHT, KEY_BOXED_TOP, KEY_NONE
 
Constructor Summary
FloatingBarGraph()
           
 
Method Summary
 void set(String xset, double min, double center, double max)
          Add a bar with the specified bottom, middle and top values.
 void setColor(String name, Paint color)
          Set the color of a dataset.
 
Methods inherited from class org.faceless.graph.AbstractBarGraph
optionBarDepth, optionBarWidth, optionDisplayValue, optionRoundBars, optionXStretchToZero, optionYStretchToZero
 
Methods inherited from class org.faceless.graph.AxesGraph
optionAxisStyle, optionBoxColor, optionFloorStyle, optionMaxY, optionMinY, optionXAxisAtZero, optionXAxisLabel, optionXAxisLabelStyle, optionXAxisStyle, optionXAxisTextRotation, optionXFormatter, optionYAxisAtZero, optionYAxisLabel, optionYAxisLabelStyle, optionYAxisStyle, optionYAxisTextRotation, optionYFormatter, optionYWallStyle, optionZAxisStyle, optionZFormatter, optionZWallStyle
 
Methods inherited from class org.faceless.graph.Graph
getDefaultBorderColor, getFontScale, optionDisplayKey, optionFixedAspectRatio, optionKeyBoxStyle, optionKeyStyle, optionSubTitle, optionSubTitleStyle, optionTitle, optionTitleStyle, optionXRotation, optionYRotation, optionZRotation, setDefaultBorderColor, setDefaultColors, setDefaultLineThickness, setFontScale, setLicenseKey, setLightLevel, setLightVector, setPieEdgeDegrees, toCanvas
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

FloatingBarGraph

public FloatingBarGraph()
Method Detail

set

public void set(String xset,
                double min,
                double center,
                double max)
Add a bar with the specified bottom, middle and top values.

Parameters:
xset - The data set on the X axis. If it doesn't exist, it's created.
min - The Y axis value for the bottom of the bar
center - The value at which to end the bottom half and start the top half of the bar
max - The Y axis value for the top of the bar
Throws:
IllegalArgumentException - If paramaters min, max or center are infite.

setColor

public void setColor(String name,
                     Paint color)
Set the color of a dataset. The set must be either MIN or MAX, otherwise an IllegalArgumentException is thrown.

Parameters:
name - the name of the dataset, either MIN or MAX
color - the color to set this dataset to.


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