如何读取数据 textread，例如通过x textread( x_inlet.txt )我们可以把文件x_inlet.txt中的数据存储到数组x中，且x的维数和大小会自动与文件x_inlet.txt的相匹配。

如何画二维曲线图 plot，例如 plot(x,y, ob- , linewidth , 2)可以画分别以xy为横纵坐标的二维曲线，线型由ob-决定。

-How to read the data textread, for example, through x　 textread ( x_inlet.txt ) we can store the data in the file x_inlet.txt into the array x, and the dimension and size of x will automatically match the file x_inlet.txt match.

How to plot two-dimensional plot plot, for example plot (x, y,　ob- ,　linewidth , 2) can draw a two-dimensional curve with xy as the vertical and horizontal, respectively. The line type is determined by ob-.