Plotly: Add two y-axis in the same graph

📊 Plotly Python
1

I have the following dataframe:

image
image707×164 6.24 KB

I want to add two lines in the same plot. Essentially landed_value_millions and wholesale_values_millions plotted over years.

The following code, which I got from Line Plot Modes gives the error ValueError: Invalid value of type 'builtins.str' received for the 'x' property of scatter. Received value: 'year' The 'x' property is an array that may be specified as a tuple, list, numpy array, or pandas Series

import plotly.graph_objects as go
salmon_value = go.Figure()

salmon_value.add_trace(go.Scatter(x='year', y='wholesale_values_millions',
                             mode='lines',
                             name='whole sale value'))
salmon_value.add_trace(go.Scatter(x='year', y='landed_value_millions',
                             mode='lines+markers',
                             name='landed value'))

salmon_value.show()

Anybody know how to fix this? Thank you.

2

go.Scatter() doesn’t accept column names for x and y, for this you’d have to use Plotly Express. If you want to use go.Scatter() you’ll have to pass in actual columns of values like x=df["year"].

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