CODEWITHSUNDEEP
pythonpython-3.xdictionarymatplotlibboxplot
Tom Pitts
Tom Pitts

Reputation: 345

Creating multiple boxplots on the same graph from a dictionary

I am trying to create a graph whereby the x axis is the key of the dictionary and the boxplot is from the information inside the dictionary. My dictionary can have many keys.

Data = {'ABC': [34.54, 34.345, 34.761], 'DEF': [34.541, 34.748, 34.482]}
    
for ID in Data:      
        plt.boxplot(Data[ID])
        plt.xlabel(ID)
plt.savefig('BoxPlot.png')
plt.clf()

It however seems to put the box plots on top of each other. I tried iterating the positions value within boxplot with no luck. I would also like to use the key as the xaxis value for each boxplot if possible.

Upvotes: 31

Views: 80586

Answers (2)

cottontail
cottontail

Reputation: 23141

labels= parameter can be used to set x-axis labels in the boxplot() call.

my_dict = {'ABC': [34.54, 34.345, 34.761], 'DEF': [34.541, 34.748, 34.482]}
plt.boxplot(my_dict.values(), labels=my_dict.keys());

If it were a pandas dataframe, the labels are also applied automatically.

df = pd.DataFrame(my_dict)
df.plot(kind='box');

result

Upvotes: 2

Diziet Asahi
Diziet Asahi

Reputation: 40697

my_dict = {'ABC': [34.54, 34.345, 34.761], 'DEF': [34.541, 34.748, 34.482]}

fig, ax = plt.subplots()
ax.boxplot(my_dict.values())
ax.set_xticklabels(my_dict.keys())

enter image description here

Upvotes: 62

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