Plotly.express area multiple plot error

📊 Plotly Python
1

Hi all

This is my code:

import pandas as pd
import plotly.express as px
df={'x':[1,2,3,4,5],'y1':[1,2,3,4,5],'y2':[2,3,4,5,6],'y3':[3,4,5,6,7]}
df=pd.DataFrame(df)
fig = px.area(df, x="x", y=['y1','y2','y3'])
fig.show()

As you can see my Y data are maximum 7. Why the results in the figure shows wrong values? why the vertical axis (value) do not show the correct values that are defined in above dictionary???

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2

As I understood, ( pandas - Plotly.express Area multiple plots data error - Stack Overflow)
plotly.express.area
creates a stacked area plot, where each filled area corresponds to one column of the input data:

For example, at x = 5 , the stacked area plot reaches y = 18 = 5 + 6 + 7 .

Now the question is that What if I need to fill the area under the function like express.area whitout above problem ?

3

@Bijan, you can do it this way

df={'x':[1,2,3,4,5],'y1':[1,2,3,4,5],'y2':[2,3,4,5,6],'y3':[3,4,5,6,7]}
df=pd.DataFrame(df)
fig = go.Figure() 
fig.add_scatter(x = df['x'], y=df['y1'], mode='lines',fill='tozeroy', fillcolor='red') 
fig.add_scatter(x = df['x'], y=df['y2'], mode='lines', fill='tonexty',fillcolor='green') 
fig.add_scatter(x = df['x'], y=df['y3'], mode='lines',fill='tonexty',fillcolor='blue') 

fig.show()
1 Like
4

Thanks @alooksha. That’s the answer :+1: