Added Week, Quarter and Semester to the DateAxis. For that I copied
the DateAxis and created the DateAxisEx (Ex for Extended; maybe I
shouldn't have changed the name) which would support the additional
RegularTimePeriods.
Compatible with jfreechart 1.0.1.
PS: Not sure, if this is the right way to do it.
DateTickUnit improvement
DateAxis improvement
RegularTimePeriod for Semester
Logged In: YES
user_id=1358941
Originator: YES
Still based on jfreechart 1.0.1.
File Added: DateAxisEx.java
Bugfix: Changed previousStandardDate so it supports weekly and 2-weekly intervals.