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urat processing matlab codes for

说明：  主元素分析源程序代码，实现主元素分析的完整代码(Principal component analysis source code to achieve the complete code for principal component analysis)

在matlab中，绘制图像的灰度直方图，并均衡化复原图像(In matlab, rendering the image histogram, and equalization restored image)

于慧敏信号与系统第二版第五章部分习题的matlab代码... (And systems in Huimin Xin No. Part Second Edition Chapter Exercises matlab code ...)

说明：  计算一系列值出现的频数，并作出极坐标图，在地理坡向中很有用(Calculated the frequency range of value occurs, and to make Polar, is useful in geographical aspect)

Convolution code codigo de convolucion

This function approximates the long period the peak of the scattering curve on the frame range ‘start’ to ‘finish’. Note: not valid for noisy data.

  Matlab中如何求一个序列的极值？在Matlab中有专门求序列最大值和最小值的函数，分别是Max  和  Min，但是有时候我们不满足于求整个序列的最值，而是对序列的极值，也就是局部的最值感兴趣。对于解析函 数，这个比较简单，只要令一阶倒数为零求出对应的自变量就行了。(Matlab how to seek a extremum sequence? In the Matlab there is a special function for sequence of maximum and minimum values, respectively is Max and Min the value, but sometimes we do not meet for the whole series, but the extremum sequence, also is the value of local interest. For analytic functions, this is relatively simple, as long as the countdown to zero order and related variables on the line.)

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executable code for human encription image in a text from 1 to 99 years old