How to plot a bar graph labels in alphabetical order in python?

Question

I have the following bar graph:

I would like to alphabetically order the Y-axis labels (i.e, control, exclude, necrosis, other, tissue, tumor and not control, other, necrosis, exclude, tissue, tumor). Ho do I do that?

What I tried so far?

smack = df.roi_name.value_counts()

plt.barh(width=smack.values, y=smack.index)
plt.xlim(0,50000)
plt.xlabel("ROI_NAME count")
fig = plt.gcf()
fig.set_size_inches(18.5, 10.5)

Thanks in advance!

You can find solution here https://stackoverflow.com/questions/22635110/sorting-the-order-of-bars-in-pandas-matplotlib-bar-plots — yoonghm, Feb 02 '21 at 13:42

score 1 · Accepted Answer · answered Feb 02 '21 at 14:46

1

you just need to sort index of your dataframe when you give it to plt.barh(), like below:

plt.barh(width=smack.values, y=smack.index.sort_values())

answered Feb 02 '21 at 14:46

ashkangh

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you can aslo rearrange index of your dataframe before plotting, and then plot it, like below: `df = df.sort_index()` `plt.barh(width=smack.values, y=smack.index.)` – ashkangh Feb 02 '21 at 15:07

How to plot a bar graph labels in alphabetical order in python?

1 Answers1