CODEWITHSUNDEEP
pythonplotly
Alex
Alex

Reputation: 1131

plotly - lines do not start on yaxis

the following code is an example, because i am not able to reproduce the problem. the image 2 shows my problem, that the lines start not on the left (on yaxis). the input data seem to be the same, the code to plot the chart is exactly the same.

import pandas as pd
from pandas.tseries.offsets import DateOffset

sdate = date(2021,1,31)
edate = date(2021,8,30)
date_range = pd.date_range(sdate,edate-timedelta(days=1),freq='m')
df_test = pd.DataFrame({ 'Datum': date_range})



df_test.loc[len(df_test)+1,'Datum']=(df_test['Datum'].min()-DateOffset(months=1))
df_test=df_test.sort_values(by='Datum',ignore_index=True)
df_test['indexed'] = [1,2,3,4,5,6,7,7]
df_test['index'] = [5,5,3,4,5,6,7,7]

data = df_test
sdate=data['Datum'].min()
title = 'Gesamtperformance'
font ='Helvetica'

fig = go.Figure()
fig.add_trace(go.Scatter(x=data['Datum'], y=data['indexed'],
                         line = dict(color='blue', width=4),
                         mode='lines',
                         name=title))

fig.add_trace(go.Scatter(x=data['Datum'], y=data['index'],
                         line=dict(color='black', width=4, dash='dot'),
                         mode='lines',
                         name=title))

fig.layout = go.Layout(yaxis=dict(tickformat=".0%"))
fig.update_layout(font_family=font,
                  font=dict(
                      family=font,
                      size=30),
                  legend=dict(font=dict(family=font, size=30, color="black")))

fig.update_layout(yaxis_title="Performance",
                  margin=dict(l=100, r=0, t=0, b=120),
                  plot_bgcolor='grey',
                  legend=dict(
                      orientation="h",
                      yanchor="top",
                      y=-0.065,  # distance legend to chart
                      xanchor="auto",
                      x=0.5)
                  )
fig.update_xaxes(dtick="M6", tickformat="%b %Y")
fig.update_layout(xaxis=dict(tick0=sdate))  # sets start date
fig.update_layout(width=1485, height=1100)

plotly.io.write_image(fig, file='test_line.png', format='png')

output example code, where the lines begin on yaxis: enter image description here

output, where lines do not start in yaxis (left) and I do not why:

enter image description here

may somebody know how to start the lines on the left. thanks

Upvotes: 0

Views: 79

Answers (1)

sotmot
sotmot

Reputation: 1313

Consider using x_axis_range in the update_layout. The code is as follows:

fig.update_layout(xaxis_range=[sdate, edate])

Upvotes: 1

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