Trendline for subplots

📊 Plotly Python
1

Hi there,

I know adding OLD trendline should be very easy, i did this many times but somehow I cant do it in the code below. I looked so many pages but still no lack. Could anyone point me in the right direction please?

fig= make_subplots(rows=2, cols=3, subplot_titles=(’’))

fig.add_trace(go.Scatter(x=dfsg[‘GBP/Loc’], y=dfsg[‘Vol’],opacity=0.55,mode=‘markers’), row=1, col=1)
fig.add_trace(go.Scatter(x=dfau[‘GBP/Loc’], y=dfau[‘Vol’],opacity=0.55,mode=‘markers’), row=1, col=2)
fig.add_trace(go.Scatter(x=dfcn[‘GBP/Loc’], y=dfcn[‘Vol’],opacity=0.55,mode=‘markers’), row=1, col=3)
fig.add_trace(go.Scatter(x=dfhk[‘GBP/Loc’], y=dfhk[‘Vol’],opacity=0.55,mode=‘markers’), row=2, col=1)
fig.add_trace(go.Scatter(x=dfjp[‘GBP/Loc’], y=dfjp[‘Vol’],opacity=0.55,mode=‘markers’), row=2, col=2)
fig.add_trace(go.Scatter(x=dfkr[‘GBP/Loc’], y=dfkr[‘Vol’],opacity=0.55,mode=‘markers’), row=2, col=3)

fig.update_layout(height=500, width=800,
title_text=“Multiple Subplots with Titles”)

fig.show()

2

If you switch to using plotly.express you can use trendline="ols" but you’ll need to merge your dataframes into one and use facet_col and facet_col_wrap

3

Hey Nicolas, thank you for the advise. I tried before to do what you suggested, the trend line was perfect but the thing is I wanted the axes to be different in the charts otherwise in some of them all dots will be squished.

Do you think is that possible with the approach you suggested?

4

Yep, check out the facet docs here for independent axes using matches=None: https://plotly.com/python/facet-plots/#facets-with-independent-axes