清华大学2D的完整代码，清华大学拿过好几届的冠军-tsinghua 2D source code

二维、三维反距离加权代码，由已知数据点，通过加权差值未知数据点的值-Two-dimensional, three-dimensional inverse distance weighted code

zedgraph开源的.NET图表类库， 全部代码都是用C#开发的。它可以利用任意的数据集合创建2D的线性和柱形图表。这是实现的一个例子.-Open source. NET chart library, all code is developed using C#. It can be created using any of the data set of linear and 2D bar chart form.

VB中实现二维码生成的控件。以及二维码生成的简单实例-VB to achieve the two-dimensional code generated control. As well as a simple example of 2D code generation