坐标曲线在各种统计图中应该算比较难画的，主要是很难将坐标值与图中的位置对应起来.本文给出了坐标曲线的编程实现-Coordinate curve in a variety of charts that should be regarded as relatively difficult to draw, mainly it is difficult to value and map coordinates of the location of the corresponding up. In th

设某信号 , N=20, 其中， 为白噪声。 求: 编程实现信号的DFT及其反DFT变换，画出原始信号、幅频特性和反变换后信号的曲线。 -Let a signal, N = 20, which, for the white noise. Demand: programming signal DFT and its inverse DFT transform, draw the original signal, the amplitude-frequency characteristic

Excel画平滑曲线散点图.看走势。在excel 下有用。-Excel draw a smooth curve scatterplot

求出的傅里叶变换。画出其幅频特性和相频特性曲线（提示：用1024点FFT近似） -Seek out the Fourier transform. Draw its amplitude frequency characteristic and phase frequency characteristic curve (hint: use 1024 point FFT approximation)

啁啾光栅 该文档描述了用MATLAB画出色散曲线的方法-chirp grating