My Bloch sphere is appearing as an ellipse/oval

Asked Aug 04 '20 at 09:39

Active Aug 04 '20 at 09:39

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I tried to plot a Bloch vector. However, my Bloch sphere is appearing as an ellipse/oval instead of a circle. I am having the same issues with qsphere also.Jupyter notebook on my Mac(Safari)

from qiskit.visualization import plot_bloch_vector

%matplotlib inline

plot_bloch_vector([0,1,0], title="New Bloch Sphere")

asked Aug 04 '20 at 09:39

Shalabh Agarwal

Did you try changing the aspect ratio with the `figsize` option? – baccandr Aug 04 '20 at 09:49
Yes, I tried. However, it is only change the size of the figure not the shape. – Shalabh Agarwal Aug 04 '20 at 13:35
Also, I thought it may be a problem with the jupyter notebook, so I executed the code in IBM Q Experience and still the problem was there. – Shalabh Agarwal Aug 04 '20 at 13:37
An issue has been opened for this problem: github.com/Qiskit/qiskit-terra/issues/4770. It looks like it might be an issue with a specific matplotlib version – Matthew Stypulkoski Aug 06 '20 at 15:08
1

Thank You. I changed my version of Matplotlib from 3.3.0 to 3.2.2 and it solved the problem. – Shalabh Agarwal Aug 07 '20 at 19:29

My Bloch sphere is appearing as an ellipse/oval

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