px :: Plotly express

Published onesixx on 17-07-0817-07-08

https://plotly.com/python-api-reference/

Plotly Express: high-level interface for data visualization
Graph Objects: low-level interface to figures, traces and layout
Subplots: helper function for layout out multi-plot figures
Figure Factories: helper methods for building specific complex charts
I/O: low-level interface for displaying, reading and writing figures
plotly.colors: colorscales and utility functions
plotly.data: built-in datasets for demonstration, educational and test purposes

import plotly.express as px

px vs. go

import pandas as pd

df = pd.DataFrame({
  "Fruit":        ["Apples", "Oranges", "Bananas", "Apples", "Oranges", "Bananas"],
  "Contestant":   ["Alex", "Alex", "Alex", "Jordan", "Jordan", "Jordan"],
  "Number Eaten": [2, 1, 3, 1, 3, 2],
})

# Plotly Express ----------------------------------------------------
import plotly.express as px

fig = px.bar(df, 
             x="Fruit", y="Number Eaten",
             color="Contestant", barmode="group")
fig.show()


# Graph Objects -----------------------------------------------------
import plotly.graph_objects as go

fig = go.Figure()
for contestant, group in df.groupby("Contestant"):
    fig.add_trace(
        go.Bar(
            x=group["Fruit"], y=group["Number Eaten"], 
            name=contestant,
			hovertemplate="Contestant=%s<br>Fruit=%%{x}<br>Number Eaten=%%{y}<extra></extra>"% contestant)
	)
    
fig.update_layout(legend_title_text = "Contestant")
fig.update_xaxes(title_text="Fruit")
fig.update_yaxes(title_text="Number Eaten")

fig.show()

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