时序潮流的电压绘图

绘制B样条曲线，可以由控制点画，也有反求控制点的(Rendering B-spline curve can be controlled by the stipple, but also have control points in Reverse)

本代码是进行齿轮参数设计和参数校核，参数化绘制二维工程图的源代码(gear parameters for the design and verification parameters, parametric mapping of two-dimensional engineering drawings source code)

非常强大的光学仿真软件，可以模拟光线的反射、折射、以及绘制各种像差曲线例如球差、色差。(Very powerful optical simulation software can simulate light reflection, refraction, and the mapping of various aberrations such as spherical aberration curves, color)

用mtlab编程绘制光学系统的光学传递函数mtf曲线(we can plot MTF curve by MATLAB )

电流互感器，用于与pscad交互使用，各部分齐全，功能完善(Current transformers for interactive use with pscad, each part is complete, fully functional)

自由曲线图表、柱状图、饼图的实现与转换，基于一套简单的图形类库（源代码在内）。(free curve charts, column, pie and the realization of conversion, based on a simple set of graphics libraries (including source code).)

传染病模型，用于数学建模数据分析及绘图，包括SI模型、SIR模型、SIS模型图形绘制。(Epidemic model for mathematical modeling data analysis and graphics, including the SI model, SIR model, SIS model graphics rendering.)

本代码实现了一个地图比例尺的功能，方便各种地图类型代码的基本控件使用(This code implements a function of map scale to facilitate a variety of map types of code to use the basic controls)

用于自NOAA下载的风场数据（.nc）绘图成相关图件(For drawing the wind data of NOAA. (nc) files)

说明：  python画柱状图，python画散点图，python画双y轴图，python画柱状图，python画散点图，python画双y轴图(Python draws a histogram)