J2ME Chart / Graph API v0.9

tazzix — Tue, 02 Mar 2004 15:26:25 +0000

Overview:

Currently un-named, its goal is to provide a chart drawing package based on MIDP 1.0 specifications. Another goal is to make this package open-source, see help required below.
Status:

Line charts are complete
Pie charts are complete
Bar and Bar with Line charts are working but require some minor changes
Data can be given in categories and multiple lines and bars are drawn
An area of the screen can be given for charting while application uses the rest of the screen
With a sample application the obfuscated jar is 16 KBytes and takes 52 KBytes heap memory on the Nokia Series 60 emulator
Axes drawing is partially working (lables and markers are missing)

TODOs:

Customizations in drawing charts (Point circles, Axes stepping, lines in BarCharts, etc.).
Chart titles, Axes titles, Data titles, Legend Charts for better explanation of charts.
Finding a way to release the API in a way that source is hidden (till opensource efforts succeed).

Screen Shots:

Here you see a simple midlet on a Nokia 3650, with the charts occupying the whole j2me canvas area.

First try at a MIDP1.0 Graph/Chart API

tazzix — Tue, 25 Nov 2003 05:48:00 +0000

Screen shot of my latest j2me work to write a chart plotting API, you can see it in the Nokia series 60 emulator and the Default Color phone emulator from j2mewtk. Although it can contain a lots of bells and whistles, I plan to keep it simple to be viewable on all screen sizes, however, applications need to check for color, gray scale or monochrome device.

A lot more to come in this category, I am in the process of converting my website (Sep 2007) so come back soon.

tazzix.com » graph

J2ME Chart / Graph API v0.9

First try at a MIDP1.0 Graph/Chart API