log10(x)

说明：  模式识别knn分类器，matlab代码，k近邻算法(knn classifier ，matlab code)

分别设计理想低通滤波器、巴特沃思滤波器、指数滤波器、梯形低通滤波器,并对含高斯噪声的图像进行低通滤波，截止频率自选，观察不同的截止频率,不同的滤波器的滤波效果。(Were designed for the ideal low pass filter, Butterworth filter, exponential filter, ladder low-pass filter, and Gaussian noise images with low-pass filter cutoff frequency chosen to observe the different cut-off frequency, different filter filtering device.)

simulink的入门教程，老师上课讲的课件，较易懂，适用于初学者(simulink introductory tutorial, the teacher talked about class courseware, more easy to understand for beginners)

QPSK是通信信道中一种很好的调制方式，对于其性能参数进行了仿真，信道以及噪声选择可以根据代码自由改动。对学习无线编码很有用处。(QPSK is a good communication channel modulation, the performance parameters for the simulation, channel and noise free choice can be altered according to the code. Learning wireless encoding useful.)

检测跟踪算法，检测算法用的kim算法，跟踪用的均值偏移算法(Detecting and tracking algorithm, detection algorithm method used by kim, tracking using mean shift algorithm)

FACS表情图释，包括肌肉图解和各种表情的诠释，有助于人脸表情识别研究学习(FACS expression emoticons, including muscle illustrations and expressive interpretation, contribute to the study of facial expression recognition learning)

可以计算不同雷洛系数下的紊流,非常方便!(The main code can compute different turbulence Venturello coefficients, very easy!)

计算最小自由度下球坐标两个自由度的最优值。(Spherical coordinates to calculate the minimum degree of freedom under the optimal value of the two degrees of freedom.)

计算太阳黑子的活动周期，分别利用周期图法，Lenvinson-Durbin法和Burg法求得其功率谱，并画出曲线，观察得到活动周期(Calculation of sunspot activity cycle, namely the use of periodogram, Lenvinson-Durbin and Burg obtained the power spectrum, and draw curve, observation cycle)

prgram to compute the STFF