Use Pandas index in Plotly Express
Reference: https://plot.ly/python/px-arguments/#using-the-index-of-a-dataframe
You can pass the index as reference explicitly.
So in your case, this would be:
import plotly.express as pxiris = px.data.iris()fig = px.scatter(iris, x=iris.index, y="sepal_length")fig.show()--
BONUS QUESTION: what if iris has a pd.MultiIndex?
Use pd.MultiIndex.get_level_values.
import plotly.express as px# dummy example for multiindexiris = px.data.iris().set_index(['species', 'species_id', iris.index])fig = px.scatter( iris, x=iris.index.get_level_values(2), y="sepal_length")fig.show()
You can simply leave it blank, like so:
import plotly.express as pxiris = px.data.iris()fig = px.scatter(iris, y="sepal_length")fig.show()
You can only pass the column name at x & y parameters of px.scatter(). Seems there is no column named "index" in the iris dataset.