com.ijchart.xychart.function
Class LineFunction

java.lang.Object
  com.ijchart.xychart.function.LineFunction

All Implemented Interfaces:

IFunction, java.io.Serializable

public class LineFunction
extends java.lang.Object
implements IFunction, java.io.Serializable

Title: IJChart

Description: a chart library for the Java(tm) platform.

直线函数,形式为y=a+bx.

Copyright: Copyright (c) 2013

Company:

Version:

1.0

Author:

zhang feng min,shanghai china. Contract me by email.

See Also:

Serialized Form

Constructor Summary

LineFunction(double a, double b)
根据截距和斜率构造直线.

Method Summary

boolean	equals(java.lang.Object obj) 覆盖equals方法.
double	getA() 返回截距.
double	getB() 返回斜率.
double	getY(double x) 根据x值计算y值.
int	hashCode() 计算hashcode值.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LineFunction

public LineFunction(double a,
                    double b)

根据截距和斜率构造直线.

Parameters:

a - double 截距.

b - double 斜率.

Method Detail

getA

public double getA()

返回截距.

Returns:

double 截距.

getB

public double getB()

返回斜率.

Returns:

double 斜率.

getY

public double getY(double x)

根据x值计算y值.

Specified by:

getY in interface IFunction

Parameters:

x - double x值.

Returns:

double y值.

equals

public boolean equals(java.lang.Object obj)

覆盖equals方法.

Overrides:

equals in class java.lang.Object

Parameters:

obj - Object

Returns:

boolean

toString

public java.lang.String toString()

覆盖toString()方法.

Overrides:

toString in class java.lang.Object

Returns:

String

hashCode

public int hashCode()

计算hashcode值.

Overrides:

hashCode in class java.lang.Object

Returns:

a hash code value for this object.