jfreechart-1.0.13-api
JFreeChart是JAVA平台上的一个开放的图表绘制类库。它完全使用JAVA语言编写，是为applications,applets,servlets以及JSP等使用所设计。JFreeChart可生成饼图（piecharts）、柱状图（barcharts）、散点图（scatterplots）、时序图（timeseries）、甘特图（Ganttcharts）等等多种图表，并且可以产生PNG和JPEG格式的输出，还可以与PDF和EXCEL关联。(JFreeChart is an open diagramming class library on the JAVA platform. It is written entirely in JAVA language and is designed for applications, applets, servlets and JSPs. JFreeChart can generate pie charts, bar charts, scatterplots, timeseries, Ganttcharts and other charts, and can produce PNG and JPEG output, as well as PDF and EXCEL.)
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