ZedGraph is a set of classes, written in C#, for creating 2D line and bar graphs of arbitrary datasets. The classes provide a high degree of flexibility -- almost every aspect of the graph can be user-modified. At the same time, usage of the classes

简单的二维图像绘图程序.可画直线\圆等二维图形,可调节线形,颜色等.-2D graph drawing programe.

一个很好用的 qt插件 第三方库文件 在各种2d 的曲线图 饼图 柱状图等等画图方面 很强大-Qt a good plug-in third-party libraries are very powerful in a variety of 2d drawing of the graph, pie chart, histogram, etc.