Draw

零阶一类贝塞尔函数曲线，并画出其包络线的源程序(Zero-order Bessel function curve and draw the envelope of the source)

实现本机流量监控绘图，测试可用，方便安全(Netflow monitoring)

社区发现最常用的画图工具netdraw 使用简单方便 里面有使用说明 及例子 直接导入里面的例子文件即可(netdraw community detection)

信号频谱分析 1. 观测已知方波信号、正弦波信号的频谱 分析频率为4KHz、8KHz的占空比为50 的方波信号、正弦波信号的频谱。记录所得频谱图。 观测实时模拟信号（语音）的频谱 用音频设备采集一段语音，将语音存为.wav格式。对wav文件作分段傅里叶变换分析。语音是分音节的，应把它分段分析，而且实际运用中的数字信号处理的FFT的点数是有限的，一般只能达到千点。用傅里叶反变换IFFT，从频域恢复信号。画出频谱图和语音波形图(Signal spectrum analysis 1. Observing a known square-wave signal, sine wave signal frequency spectrum analysis 4KHz, 8KHz for the 50 duty cycle square wave signal, sine wave signal frequency spectrum. The recorded frequency spectrum. Observing real-time analog signal (voice) of the spectrum collected with the audio devices section of voice, voice saved as. Wav format. Wav file of the sub-Fourier transform analysis to make. Speech is divided into syllables, it should be sub-analysis, and practical application of digital signal processing of the FFT points is limited, generally only reach 1000 points. Fourier inverse transform IFFT, to restore the signal from the frequency domain. Draw maps and voice waveform spectrum)

经典绘图（见word文档）：三维曲线，一窗口多图形，图形样式、标注、题字，绘制心形图，用双轴对数，绘制数据向量，条形图，水平条形图，绘制矩阵的面积图，二维饼图，误差图，绘制火柴杆图，绘制羽列图，绘制8阶魔方矩阵的等值线图和阶梯图，绘制玫瑰花图，罗盘图，梯度场矢量图，三维网格图，绘制高斯分布函数的网格图，曲面图，绘制曲线图，三维饼图。三维条形图，绘制柱形图，三维瀑布图，等高线，绘制一个球面，三角形表面图，三维动画图。将word代码拷贝到m文件即可运行，word文件中还有做好的图样例。(The classical drawing (see word document): 3D curve, a window graphics, graphic style, annotation, inscriptions, draw a heart, with double logarithm, drawing data vector, bars, horizontal bar charts, area mapping matrix, two pie charts, error map, drawing fire wood bar graph, plotting feather diagram, isoline chart and the ladder chart of 8 order magic square matrix, drawing compass rose diagram, diagram, gradient vector, three-dimensional grid map, drawing Gauss distribution function of the grid map, the surface chart, draw curve, the 3-D pie chart. A 3-D bar chart, draw a column chart, 3D waterfall map, contour, draw a spherical, triangular surface map, 3D animation graph. Copy the word code to the m file to run, and to map sample word file.)

对三维融合后的图像进行质量评价，其中包括信息熵、平均梯度、标准差、空间频率、均方根误差、峰值信噪比 (The three-dimensional fusion of the image quality uation, including information entropy, the average gradient, standard deviation, spatial frequency, root mean square error, peak signal to noise ratio)

利用matlab绘制Rotman透镜，并用简单的随机搜索进行性能优化，优化部分算法比较简单，可自行改用更有效的算法(Design Rotman Lens with matlab)

OpenSceneGraph Quick Start Guide(The OpenSceneGraph the Quick Start Guide)

PSCAD风机（异步机）+SVC无功补偿模型(PSCAD wind SVC)

HVDC经典模型，PSCAD搭建，可以自己修改参数(HVDC classic model, PSCAD build, you can modify the parameters yourself)