[X] I have checked that this issue has not already been reported.
[X] I have confirmed this bug exists on the latest version of pandas.
[ ] I have confirmed this bug exists on the main branch of pandas.
import pandas as pd
df = pd.DataFrame({'value': [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
'label': ['c', 'c', 'c', 'c', 'b', 'b', 'b', 'b', 'a', 'a']})
df.label = pd.Categorical(df.label, categories=['c', 'b', 'a'], ordered=True)
df.plot.box(by='label')
If I try to plot a dataframe and group it by a categorical column, the dataframe is not correctly plotted.
Expected outcome should be like:
This image was produced by the code below.
import pandas as pd
df = pd.DataFrame({'value': [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
'label': ['c', 'c', 'c', 'c', 'b', 'b', 'b', 'b', 'a', 'a']})
df.plot.box(by='label')
commit : 8dab54d6573f7186ff0c3b6364d5e4dd635ff3e7 python : 3.9.15.final.0 python-bits : 64 OS : Linux OS-release : 5.15.79.1-microsoft-standard-WSL2 Version : #1 SMP Wed Nov 23 01:01:46 UTC 2022 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : C.UTF-8 LOCALE : en_US.UTF-8
pandas : 1.5.2 numpy : 1.24.0 pytz : 2022.7 dateutil : 2.8.2 setuptools : 65.6.3 pip : 22.3.1 Cython : None pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : 4.9.2 html5lib : None pymysql : None psycopg2 : None jinja2 : None IPython : 8.7.0 pandas_datareader: None bs4 : None bottleneck : None brotli : None fastparquet : None fsspec : None gcsfs : None matplotlib : 3.6.2 numba : None numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pyreadstat : None pyxlsb : None s3fs : None scipy : 1.9.3 snappy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None zstandard : None tzdata : None
