CODEWITHSUNDEEP
pythonmatplotlib
astrochris
astrochris

Reputation: 1866

matplotlib histtype='step' looses data

I am plotting a histogram using matplotlib, my code is bellow. In the second plot if i set the histtype='step' I loose three bins of the data and cannot work out why. Has anyone had this problem before? If I change the histtype='bar' the plot looks fine.See image attached.

Code 1:

plt.hist(DelB[Sp],bins=20,histtype='step',normed=True,label='Sp')
dd=np.concatenate((DelB[S0],DelB[E]))
plt.hist(dd,bins=15,color='g',histtype='step',normed=True,label='E+S0')
plt.xlim(0.4,2.3)
ylabel('normalized fraction',size=15)
plt.legend()

Code2:

plt.hist(DelB[Sp],bins=20,alpha=0.5,facecolor='blue',normed=True,label='Sp')
dd=np.concatenate((DelB[S0],DelB[E]))
plt.hist(dd,bins=15,alpha=0.5,facecolor='green',normed=True,label='E+S0')
plt.xlim(0.4,2.3)
plt.legend()
ylabel('normalized fraction',size=15)

enter image description here

Upvotes: 2

Views: 1537

Answers (1)

Christoph
Christoph

Reputation: 1557

Your axis limits in the second plot are different. You can't see bars that are below the image boundary. Adding plt.ylim(0,2) will solve the issue

Upvotes: 2

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