python - Matplotlib - Stepped histogram with already binned data

Question

I am trying to get a histogram with already binned data. I have been trying to use bar() for this, but I can't seem to figure out how to make it a stepped histogram like this one from the examples, instead of a filled histogram.

Answer 1

You could cheat, by offsetting your data and using plot instead:

from matplotlib import pyplot
import numpy as np

#sample data:
x = np.arange(30)
y = np.cumsum(np.arange(30))
#offset the x for horizontal, repeat the y for vertical:
x = np.ravel(zip(x,x+1))
y = np.ravel(zip(y,y))

pyplot.plot(x,y)
pyplot.savefig('plt.png')

the plot: