matplotlib plot values not in order

Question

I'm encountering some matplotlib behaviour that I do not understand. I have a daframe:

august.head()     
                     value
 config name    
low max velocity    -0.000145
medium max velocity -0.000165
reference           -0.000198
high max velocity   -0.000192

When I plot this dataframe using

plt.plot(august)

I get the following plot:

My data seems plotted chaotically and the blue line 'comes back to a previous x value' (sorry, that's the best I can do for a description of my problem)

I would like to see my data plotted with plt.plot(august) just as when I plot it using

august.plot()

Which gives me a good, ordered graph:

Any ideas?

Thanks

I suppose you are using matplotlib 2.1. Is it an option to update matplotlib to 2.2.2? — ImportanceOfBeingErnest, Aug 02 '18 at 11:18
Why don't you sort the dataframe values before you plot them? — Sheldore, Aug 02 '18 at 11:43

score 0 · Answer 1 · answered Aug 02 '18 at 11:21

0

Maybe the config names were ordered alphabetically ? In that case you could associate an integer to each config name, like here: plot-with-custom-text-for-x-axis-points

answered Aug 02 '18 at 11:21

Jacques Ung

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matplotlib plot values not in order

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