BUG: unnecessary warning in scatterplot #47697
Description
Pandas version checks
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I have checked that this issue has not already been reported.
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I have confirmed this bug exists on the latest version of pandas.
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I have confirmed this bug exists on the main branch of pandas.
Reproducible Example
import pandas as pd
import matplotlib.pyplot as plt
import seaborn as sns
sns.set_theme()
pd.DataFrame([[0, 1], [1, 0]]).plot.scatter(0, 1)
plt.show()Issue Description
I get this warning:
*c*argument looks like a single numeric RGB or RGBA sequence, which should be avoided as value-mapping will have precedence in case its length matches with*x*&*y*. Please use the*color*keyword-argument or provide a 2D array with a single row if you intend to specify the same RGB or RGBA value for all points.
I thought seaborn is the one to blame, but all it does is set some colors in a standard way.
Apparently it's pandas who should use the color= kwarg instead of c.
Expected Behavior
I would expect no warning.
Installed Versions
INSTALLED VERSIONS
commit : e8093ba
python : 3.10.5.final.0
python-bits : 64
OS : Windows
OS-release : 10
Version : 10.0.19044
machine : AMD64
processor : Intel64 Family 6 Model 142 Stepping 12, GenuineIntel
byteorder : little
LC_ALL : None
LANG : None
LOCALE : Dutch_Netherlands.1252
pandas : 1.4.3
numpy : 1.23.1
pytz : 2022.1
dateutil : 2.8.2
setuptools : 58.1.0
pip : 22.1.2
Cython : 0.29.28
pytest : 7.1.2
hypothesis : None
sphinx : None
blosc : None
feather : None
xlsxwriter : None
lxml.etree : None
html5lib : None
pymysql : None
psycopg2 : None
jinja2 : None
IPython : 8.4.0
pandas_datareader: None
bs4 : 4.11.1
bottleneck : None
brotli : None
fastparquet : None
fsspec : None
gcsfs : None
markupsafe : None
matplotlib : 3.5.2
numba : None
numexpr : None
odfpy : None
openpyxl : None
pandas_gbq : None
pyarrow : None
pyreadstat : None
pyxlsb : None
s3fs : None
scipy : 1.8.1
snappy : None
sqlalchemy : 1.4.36
tables : None
tabulate : None
xarray : None
xlrd : None
xlwt : None
zstandard : None