#48 Enhance ErrorBar

[Anonymous]

In Finance, several different error bars are used.
Suggested changes:

a) Series.java
Change
protected ErrorBar xErrorBar;
protected ErrorBar yErrorBar;

to

protected IErrorBar xErrorBar;
protected IErrorBar yErrorBar;

b) IErrorBar.java
add the following definition
void draw(GC gc, int h, int v, Axis yAxis, int i);

c) Also, it would be nice the following function to Series.java
setErrorBars(IErrorBar xErrorBar,IErrorBar yErrorBar)