plotly / plotly/plotly.py

Update the subplot x and y axis title using add_trace

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feature P3
Dominant language
Python
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Description

The snippet below gotten from plotly documentation is unneccesrily verbose. Users should be able to update x and y axis title for respective subplots by passing an argument to the add_trace() method where the row and col are also already specified. I can't imagine having more than a few subplots to make with this approach. Having a master x and y axis title is only great if all subplots are displaying the same type of data which is not always the case in science

from plotly.subplots import make_subplots
import plotly.graph_objects as go

# Initialize figure with subplots
fig = make_subplots(
    rows=2, cols=2, subplot_titles=("Plot 1", "Plot 2", "Plot 3", "Plot 4")
)

# Add traces
fig.add_trace(go.Scatter(x=[1, 2, 3], y=[4, 5, 6]), row=1, col=1)
fig.add_trace(go.Scatter(x=[20, 30, 40], y=[50, 60, 70]), row=1, col=2)
fig.add_trace(go.Scatter(x=[300, 400, 500], y=[600, 700, 800]), row=2, col=1)
fig.add_trace(go.Scatter(x=[4000, 5000, 6000], y=[7000, 8000, 9000]), row=2, col=2)

# Update xaxis properties
fig.update_xaxes(title_text="xaxis 1 title", row=1, col=1)
fig.update_xaxes(title_text="xaxis 2 title", range=[10, 50], row=1, col=2)
fig.update_xaxes(title_text="xaxis 3 title", showgrid=False, row=2, col=1)
fig.update_xaxes(title_text="xaxis 4 title", type="log", row=2, col=2)

# Update yaxis properties
fig.update_yaxes(title_text="yaxis 1 title", row=1, col=1)
fig.update_yaxes(title_text="yaxis 2 title", range=[40, 80], row=1, col=2)
fig.update_yaxes(title_text="yaxis 3 title", showgrid=False, row=2, col=1)
fig.update_yaxes(title_text="yaxis 4 title", row=2, col=2)

Something along the lines of the below snipppet would be better. Even better is if you can loop through the number of traces you created defined by the rows and cols argument of the subplot. See issue
fig.add_trace(go.Scatter(x=[1, 2, 3], y=[4, 5, 6]), row=1, col=1, xaxes_title='Date', yaxes_title='rainfall')

Thanks

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Research direction

No files or tests are named. Start by examining the add_trace(), update_xaxes(), and update_yaxes() APIs and the related subplot handling, then determine how axis-title arguments should interact with row and col. Done should include a documented, tested way to set the respective subplot axis titles through add_trace().

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data-visualization
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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