apf51

自己编写的一个二维时钟模拟程序，没有定时的功能(I have written a two-dimensional clock simulation program, regular features)

y3k=fft(u,(m+n-2)/4) i=1:(m+n-2)/4 subplot(5,2,9) stem(i,u) title( 滤波后上采样 ) k=1:(m+n-2)/4 subplot(5,2,10) stem(k,y3k) title( 上采样频谱 ) xlabel( k ) ylabel( y3k ) (y3k = fft (u, (m+ n-2)/4) i = 1: (m+ n-2)/4 subplot (5,2,9) stem (i, u) title (after filtering the sample) k = 1: (m+ n-2)/4 subplot (5,2,10) stem (k, y3k) title (on the sample spectrum) xlabel (k) ylabel (y3k))

说明：  matlab写的关于BA无标度网络的代码(scale-free complex networks sourcecode)

说明：   在三次样条中，要寻找三次多项式，以逼近每对数据点间的曲线。在样条术语中，这些数据点称之为断点。因为，两点只能决定一条直线，而在两点间的曲线可用无限多的三次多项式近似。因此，为使结果具有唯一性。在三次样条中，增加了三次多项式的约束条件。通过限定每个三次多项式的一阶和二阶导数，使其在断点处相等，就可以较好地确定所有内部三次多项式。此外，近似多项式通过这些断点的斜率和曲率是连续的。然而，第一个和最后一个三次多项式在第一个和最后一个断点以外，没有伴随多项式。因此必须通过其它方法确定其余的约束。最常用的方法，也是函数spline所采用的方法，就是采用非扭结(not-a-knot)条件。这个条件强迫第一个和第二个三次多项式的三阶导数相等。对最后一个和倒数第二个三次多项式也做同样地处理。 (the Cubic Spline, to find three polynomial, approaching every right to point the data curve. The kind of terms, these data points called breakpoints. Because only two points a straight decisions, and in between the two curves can be used an infinite number of cubic polynomial approximation. Therefore, in order for the outcome of uniqueness. The Cubic Spline, add the cubic polynomial bound by the conditions. By limiting each cubic polynomial of the first order and second-order derivative, it breakpoint in the same Department, we can better identify all internal cubic polynomial. In addition, the polynomial approximation of these breakpoints slope and curvature is continuous. However, the last one and a cubic polynomial in a breakpoint and the final one, not accompanied by polynomials. There)

该为matlab详尽学些资料第八章“数据分析”(Learn some of the detailed information for the matlab Chapter 8, " Data Analysis" )

Matlab function to generate a random vector with entire values without repetition.

关于目标追踪的一个源代码，比较了卡尔曼滤波和粒子子滤波的跟踪效果。 ，经测试可直接使用。 (A source code on the target track, and compare the tracking performance of the Kalman filter and particle sub-filter. Has been tested and can be used directly.)

对声音信号采样分析频谱,改变采样率，播放，音频信号加噪声(Spectrum analyzer of sound files)

matlab 模式识别算法和实现及其相关实验。(matlab pattern recognition algorithm and the realization of the experiment )

fft的应用，包正旋信号，脉冲信号等通 过fft变换所产生的变化(fft applications, including the sine signal, pulse signals generated by changes in fft transform)