signal

说明：  gen_H:利用随机pi矩阵排列而成的LDPC稀疏校验矩阵产生； girthlenth：计算产生的矩阵H的围长(gen_H : pi using random matrix arranged at the LDPC have sparse matrix calibration; girthlenth : calculation of the matrix H Girth)

This function gives as output the absorption coefficient of a cirrus

matlab, 对DICOM图像读取，进行阈值运算，改变颜色后输出。(matlab, read DICOM image threshold operation, change colors after output.)

Old analasys of ECG updateted recently , having noise problem

基于matlab平台上实现的遗传算法交叉算子操作，实现的是对自然数编码的两点交叉。代码无错，可以直接运行。(Based on matlab platform to achieve crossover genetic algorithm operations, the realization of the two-point crossover natural number coding. Code is error-free, can be directly run.)

用BFGS算法求解无约束问题 是一种比秩1算法更有效的优化方法(Unconstrained problem with BFGS algorithm is an algorithm is more efficient than the rank of an optimization method)

应用REF实现地下水位预测，可以在MATLAB中完美运行，好的思想，值得交流。(Application of REF to realize the prediction of groundwater level, can run perfectly in MATLAB, good ideas, worthy of exchanges.)

一种改进的k均值聚类算法，在matlab平台上测试已经通过(An improved k-means clustering algorithm on matlab platform test has been passed.)

matlab time frequency tfrcw.m

说明：  spwm，光电并伏，PI控制光伏并网系统仿真模型(Simulation model of photovoltaic grid connected system controlled by SPWM and photovoltaic PI)