[英]Plotting a histogram for categorical data
I have a dataset with two columns like as follows:我有一个包含两列的数据集,如下所示:
index Year
0 5 <2012
1 8 >=2012
2 9 >=2012
3 10 <2012
4 15 <2012
... ... ...
171 387 >=2012
172 390 <2012
173 398 <2012
174 403 >=2012
175 409 <2012
And I would like to plot it in a histogram.我想在直方图中绘制它。 I tried with
我试过
plt.style.use('ggplot')
df.groupby(['Year'])\
.Year.count().unstack().plot.bar(legend=True)
plt.show()
but I have got an error: AttributeError: 'CategoricalIndex' object has no attribute 'remove_unused_levels'
for但我有一个错误:
AttributeError: 'CategoricalIndex' object has no attribute 'remove_unused_levels'
for
df.groupby(['Year'])\
.Year.count().unstack().plot.bar(legend=True)
I think this is because I am using categorical values.我认为这是因为我使用的是分类值。 Any help would be appreciated it.
任何帮助将不胜感激。
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