lightgraph.elements

Class ErrorBars

java.lang.Object

lightgraph.elements.ErrorBars

public class ErrorBars
extends Object

Error bars can be added to a Dataset. The error bars are added by adding the values to the dataset that the error bars should be applied to. They will take the point size and line weight of the associated points, or if the dataset does not have a point the line will be checked. If neither of these are set, then the values will remain the last value set. Created by melkor on 23/02/14.

Field Summary

Fields

Modifier and Type	Field and Description
static int	XAXIS
static int	YAXIS

Constructor Summary

Constructors

Constructor and Description
ErrorBars(double[] xerrors, double[] yerrors)
ErrorBars(double[] errors, int axis) For applying Error bars along a single, x or y, axis.

Method Summary

Modifier and Type	Method and Description
void	drawErrorAt(int i, Point2D pt, GraphPainter painter) This will draw a set of error bars using the supplied painter at the location provided.
double[]	getErrorData(int axis)
boolean	hasXData()
boolean	hasYData()
static void	main(String[] args) Method for testing.
void	setScale(double scale_x, double scale_y) For correctly scaling the error bars on the graph.
void	setSize(double size) Sets the size, for the current drawing method the size is the size of the end caps.
void	setWeight(double v) sets the line weight

Methods inherited from class java.lang.Object

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

Field Detail

XAXIS

public static final int XAXIS

See Also:

Constant Field Values

YAXIS

public static final int YAXIS

See Also:

Constant Field Values

Constructor Detail

ErrorBars

public ErrorBars(double[] errors,
                 int axis)

For applying Error bars along a single, x or y, axis.

Parameters:

errors - values that are applied at each point.

axis - use the static fields to determine which axis.

ErrorBars

public ErrorBars(double[] xerrors,
                 double[] yerrors)

Method Detail

setScale

public void setScale(double scale_x,
                     double scale_y)

For correctly scaling the error bars on the graph. This is handled during the paint dataset routine.

Parameters:

scale_x -

scale_y -

drawErrorAt

public void drawErrorAt(int i,
                        Point2D pt,
                        GraphPainter painter)

This will draw a set of error bars using the supplied painter at the location provided. The scale needs to have been set to have error bars that correctly reflect the scale. The method is candidate for being made abstract, and different error bars could be used.

Parameters:

i - index of the correspoonding point.

pt - scaled position that the point will be drawn.

painter - object used to draw the error bars.

setWeight

public void setWeight(double v)

sets the line weight

Parameters:

v -

setSize

public void setSize(double size)

Sets the size, for the current drawing method the size is the size of the end caps.

Parameters:

size -

main

public static void main(String[] args)

Method for testing.

Parameters:

args -

hasXData

public boolean hasXData()

hasYData

public boolean hasYData()

getErrorData

public double[] getErrorData(int axis)