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e.charts4j.charts4j.1.3.source-code.overview.html Maven / Gradle / Ivy

charts4j
is a Java chart library that enables developers to
programmatically
generate nearly all
1
the charts available in the
Google Chart API
. charts4j can be incorporated into any Internet enabled Java (e.g.
Swing) or web application environment (e.g. JSPs / Servlets, Spring MVC,
GWT, etc.)

Installation

Developers only need to include the charts4j.jar in their
classpath. It is available in the charts4j.zip
file. The application must also be connected to the Internet because the
charts are ultimately rendered by the Google Chart API server.

Usage

Developers who are using charts4j for the first time should start
off by examining the {@link com.googlecode.charts4j.Data} and {@link
com.googlecode.charts4j.DataUtil} classes. Next, they can build charts
via the {@link com.googlecode.charts4j.GCharts} static factory class.

All data provided to charts4j is expressed as numbers between 0
and 100. If your data does not fall in that range, you will have to
scale it so it does fall in that range. The {@link
com.googlecode.charts4j.DataUtil} class can help scale data. Also note
that {@link
com.googlecode.charts4j.AbstractAxisChart#setGrid(double,double,int,int)
grids}, {@link com.googlecode.charts4j.AxisLabelsFactory axis labels
positions}, {@link com.googlecode.charts4j.Markers markers} are all
expressed in the 0 to 100 range so that chart elements defined by the
developer snap together consistently and nicely.


Another interesting feature of charts4j: {@link
com.googlecode.charts4j.Plot}s can be incorporated into more than one
chart type. In particular, they can be incorporated into

	
{@link com.googlecode.charts4j.LineChart}s
	
{@link com.googlecode.charts4j.XYLineChart}s
	
{@link com.googlecode.charts4j.BarChart}s
	
{@link com.googlecode.charts4j.ScatterPlot}s
	
{@link com.googlecode.charts4j.RadarChart}s

{@link com.googlecode.charts4j.Plot}s are created via the {@link
com.googlecode.charts4j.Plots} static factory class. {@link
com.googlecode.charts4j.GChart}s are created via the {@link
com.googlecode.charts4j.GCharts} static factory class.


Chart URLs {@link com.googlecode.charts4j.GChart#toURLString()
generated} by charts4j can then be incorporated into a web or Internet
application. In a JSP / Servlet environment, generate the URL in the
servlet and insert that URL in the JSP for display of the chart.



Code examples can be found
here
.




For additional information, see:

	
charts4j
	
Google Chart
	API
	
Google
	Chart API Group






@author Julien Chastang (julien.c.chastang at gmail dot com)

1. As of May 2009, the chart types that are not supported are QR
Codes, map pins, sticky notes, information bubbles, text with outline.
There are also a few other Google Chart API features that have not been
exposed in charts4j. If this is a problem for you please submit an
issue, and we will look into it as soon as possible.