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使用matlab绘制三角函数图像，主要学习坐标范围设置及plot函数(Matlab draw trigonometric image, mainly to study the coordinate range of settings and plot function)

matlab GUI界面程序设计源代码 对编界面的初学者十分有用(matlab GUI interface programming source code compiled interface is very useful for beginners)

Helmholtz方程的有限元解法，可以任意加密网格剖分，求解结果用图像显示.(Helmholtz equation finite element method, you can encrypt arbitrary mesh, the image display solution results.)

lets share matlab codes

说明：  遗传算法matlab实现 用遗传算法优化神经网络算法的实现(GA Matlab using genetic algorithms to achieve optimal neural network algorithm implementation)

说明：  并网逆变器下垂控制特性仿真，能正常仿真，波形控制输出有振荡，共学习参考使用。(droop control:The network-connected inverter sagging control characteristics simulation, can be normal simulation, waveform control output oscillation, a total learning reference use.)

说明：  图像在传输或长期保存中会存在图像质量下降，此程序用来对此类图像进行复原(Image in a transmission or long-term preservation will exist in image quality drop, the program used to such image restoring)

earth position naviation

计算关联度，本方法使用的是归一化的方法，和传统的经典关联度计算方法相比较，增加了对各个权重的分析和计算，使结果更加有说服力。(Correlation calculation, this method uses the normalized method, and the traditional classical correlation method compared to an increase of weights of the various analysis and calculations makes the results more convincing.)

Rosen梯度投影法，用于解决非线性规划的线性约束问题，可用于解决matlab程序(Rosen gradient projection method for solving nonlinear programming problem with linear constraints can be used to solve matlab program)