net.comrom.chart
Class Scale

java.lang.Object
  net.comrom.chart.Scale

Direct Known Subclasses:

LogScale

public class Scale

extends java.lang.Object

The scale converts the data to screen coordinates.
Most charts have two scales, one per axis.
Example:
// create axis
Axis XAxis=new Axis(Axis.HORIZONTAL,new Scale());
Axis YAxis=new Axis(Axis.VERTICAL,new Scale());
XAxis.scale.min=0;
XAxis.scale.max=7;
YAxis.scale.min=0;
YAxis.scale.max=7;
If the min and max properties are not specified, Chart will calculate them from the DataSeries

Field Summary

boolean	exactMaxValue if true, Chart will calculate the max value of the scale using the preferred min/max values list default value is true for Y axis and false for X axis.
boolean	exactMinValue
double	max maximum value of the scale.
double	min minimum value of the scale.
double[]	preferred_MaxMin_values sorted list of preferred values for minimum and maximum values.
boolean	reverse
int	screenMax maximum value of scale on the screen.
int	screenMaxMargin
int	screenMin

Constructor Summary

Scale()

Scale(int ma, int mi)

Method Summary

int	getScreenCoord(double v)
double	getValue(int c)

Methods inherited from class java.lang.Object

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

Field Detail

exactMaxValue

public boolean exactMaxValue

if true, Chart will calculate the max value of the scale using the preferred min/max values list default value is true for Y axis and false for X axis.

exactMinValue

public boolean exactMinValue

preferred_MaxMin_values

public double[] preferred_MaxMin_values

sorted list of preferred values for minimum and maximum values.

max

public double max

maximum value of the scale.

min

public double min

minimum value of the scale.

screenMax

public int screenMax

maximum value of scale on the screen.

screenMaxMargin

public int screenMaxMargin

screenMin

public int screenMin

reverse

public boolean reverse

Constructor Detail

Scale

public Scale()

Scale

public Scale(int ma,
             int mi)

Parameters:

ma -

Method Detail

getScreenCoord

public int getScreenCoord(double v)

getValue

public double getValue(int c)

Parameters:

c -