matlab-smooth

计算机图形学中的用DDA算法画直线，计算出运行时间。(Calculated run time drawing a straight line with DDA algorithm in computer graphics.)

三次bezier曲线的绘制（其中调用pow（））。(The drawing of cubic Bezier curve (where pow ()).)

本程序使用C#进行supermap二次开发，实现在工作空间里打开CAD数据，并实现图层的放大、缩小、漫游等操作。(The program uses C# for supermap secondary development of open space at work to achieve CAD data, and to achieve layers of enlargement, reduction, roaming and other operations.)

　C#使用DrawLine对象绘制一条直线，绘制水平线和垂直线，点击对应的按钮，即可调用DrawLine方法绘制直线，一种固定的模式，没有什么难度，C#入门新手参考会不错，学习一点图形绘制方面的基础知识(C# uses the DrawLine object to draw a straight line, draw horizontal and vertical lines, click the corresponding button, you can call the DrawLine method to draw a straight line, a fixed pattern, there is no difficulty, C# Beginner Novice reference would be good to learn a little graphics rendering aspects Basics)

Gompertz（龚伯次）曲线模型被广泛应用在预测中，该代码实现了G曲线的预测功能。(Gompertz curve is widely used in prediction, this code will help achieve the Gompertz curve prediction function.)

DBchart 画图 进行时间等分 时间等分(dbchart )

有100个数据点,知道x,y,z的坐标,用命令把这些点拟合成空间的曲线?看点的分布应该是螺旋线,得出一个表达式来表达曲线,有程序(Has 100 data points, know that x, y, z coordinates, using the order of these points to be synthetic curve space? Highlight the distribution should be a spiral line, derived an expression to express the curve, the procedure has)

说明：  一个简单的C语言开发的CAD二维画图软件，对刚刚开始学习大型程序设计的学习者有一定帮助(A simple CAD two-dimensional drawing software developed in C language is helpful for learners who are just beginning to learn large-scale programming.)

dxflib-3.3.4-src ，dxflib是一个用来读写DXF文件的C++库。当读DXF文件的时候,dxflib分析文件并且调用用户自己定义的函数来添加实体、层、等。(dxflib-3.3.4-src，dxflib is an opensource C++ library for reading and writing AutoCAD (R) DXF files. )

说明：  用ncl计算气象资料多年降水的eof前两个模态并作图(Calculating EOF of precipitation with NCL and mapping)