How to plot files with numpy?

Numpy doesn’t support plotting by itself. You usually would use

matplotlib

If you just want to “look into the file”, I think the easiest way would be to
use

plotfile

import matplotlib.pyplot as pltplt.plotfile('data.dat', delimiter=' ', cols=(0, 1),   names=('col1', 'col2'), marker='o')plt.show()

You can use this function almost like

gnuplot

$ ipython --pylab......In [1]: plt.plotfile('data.dat', delimiter=' ', cols=(0, 1), ...       names=('col1', 'col2'), marker='o')

or put it in a shell script and pass the arguments to it to use it directly
from your shell