Hello all, I just installed plotly express. And I am trying to do something simple - plot each column of my data frame on the same y-axis with the index as x-axis. Here are questions/observations: Is it necessary for the data frame to have index as a column to be used as x-axis ? Can I not direct…

With version 4.8 of Plotly.py , you can now plot this kind of data directly from the initial px.line() call by passing multiple values for y :slight_smile:

@Alexboiboi , The plot does not have two lines, it has a line and a scatter. I am trying to have two lines, hope that clarifies the confusion.

Ah ok. For a scatter trace, if you don’t explicitly give the argument: mode='markers', mode='lines' or mode='lines+markers' or even mode='markers+lines+text', plotly chooses one by default depending on the number of points of your trace. hope this helps, Alex-

one more way to do it would be to reshape your dataframe beforehand. For example: df1 = df.melt(id_vars=['Date']+list(df.keys()[5:]), var_name='AAPL') px.line(df1, x='Date', y='value', color='AAPL' ) [06]

@Alexboiboi , import plotly.express as px import pandas as pd import numpy as np # Get some data df = pd.read_csv('https://raw.githubusercontent.com/plotly/datasets/master/finance-charts-apple.csv') # Plot fig = px.line(df, x='Date', y='AAPL.High') # Only thing I figured is - I could do this …

[image] UdayGuntupalli: However, the one thing that is not clear is, why does it not pick the column name when I add the second trace ? Appreciate your help. this is because when you first create the figure via plotly.express it only contains one trace. By default plotly only shows the traces…

Can you provide an example? The obvious syntax doesn’t work.

@microprediction try this: import plotly.express as px import pandas as pd # Get some data df = pd.read_csv('https://raw.githubusercontent.com/plotly/datasets/master/finance-charts-apple.csv') fig = px.line(df, x='Date', y=['AAPL.High', 'AAPL.Low']) fig.show()

How can I have different rather than the same error bars on the 2 lines and how can I color the lines differently (data is here > https://www.dropbox.com/s/u2dbj0tcqz8hfhi/test_excel_import_1.xlsx?dl=0 )? import plotly.express as px import pandas as pd df = pd.read_excel('/Users/Jakob/Documents/pyt…

Unfortunately, I don’t understand what you mean by “.melt() your data to long form for this”? Is there a way to do it with these type of lines perhaps? import plotly.graph_objs as go import pandas as pd df = pd.read_csv('https://raw.githubusercontent.com/plotly/datasets/master/wind_speed_laurel_n…

How to plot multiple lines on the same y-axis using plotly express?

📊 Plotly Python

nicolaskruchten November 19, 2020, 9:12pm 14

@windrose this is a good question, and unfortunately we don’t have a way to do that right now, you’ll have to .melt() your data to long form for this.

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How to plot multiple lines on the same y-axis using plotly express?

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