实现FFT算法matlab例程

一个简单的小代码 教你怎么用插值画图 (A simple code teach you how to use the interpolation drawing)

非常实用matlab编程教程。从安装到函数应用以及可视化都有涉及。(Very practical matlab programming tutorials. From installation to function application and visualization are involved.)

一维无网格模型,通过这个文件，大家可以学习到无网格法的基本运算方法，是想要学习无网格法的入门之选(it is a file about messless)

vind2sub by Chris MATLAB s ind2sub function implemented to return a variable length vector (vector, matrix, utility)

说明：  使用matlab调用refprop，计算各种制冷剂工质的物性数据(refprop used in matlab)

ode routines in matlab

说明：  一个数如果恰好等于它的因子之和，这个数就称为“完数”。例如6=1＋2＋3.编程 　　　 找出1000以内的所有完数。 (If a number is just equal to the sum of its factors, this number is called &quot End of a few.&quot For example 6 = 1+2+3. Programmatically find all finished within a number of 1000.)

matlab在子集和问题上的应用，与遗传算法的结合使用(matlab subset problem, with the combined use of the genetic algorithm)

说明：  基于SPWM调制的两电平三相逆变器，可实现直流电变交流电(Two-level three-phase inverter based on SPWM modulation algorithm,DC to AC.)

说明：  1/3倍频程的实现，先fft然后计算上下限频率。(The realization of 1 / 3 octave, FFT first and then calculate the upper and lower frequency.)