Python plotly.express – add labels in scatter_geo

Question

I need to add static labels on markers in scatter_geo vizualization. I added text='data', but nothing had happend:

import plotly.express as px
import pandas as pd

rows=[['501-600','15','122.58333','45.36667'],
      ['till 500','4','12.5','27.5'],
      ['more 1001','41','-115.53333','38.08'],
      ]

colmns=['bins','data','longitude','latitude']
df=pd.DataFrame(data=rows, columns=colmns)
df = df.astype({"data": int})

fig=px.scatter_geo(df,lon='longitude', lat='latitude',
                      color='bins',
                      text='data',
                      opacity=0.5,size='data',
                      projection="natural earth")

fig.show()
fig.write_html('first_figure.html', auto_open=True)

Asked By: Dmitry

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Source

Answer 1

You are an update_trace away from a solution. With go.Scattergeo you can use the parameters mode and textposition inside the method while with plotly.express you should change after.

import plotly.express as px
import pandas as pd

rows=[['501-600','15','122.58333','45.36667'],
      ['till 500','4','12.5','27.5'],
      ['more 1001','41','-115.53333','38.08'],
      ]

colmns=['bins','data','longitude','latitude']
df=pd.DataFrame(data=rows, columns=colmns)
df = df.astype({"data": int})

fig=px.scatter_geo(df,lon='longitude', lat='latitude',
                      color='bins',
                      text='data',
                      opacity=0.5,
                      size='data',
                      projection="natural earth")
# This
fig.update_traces(textposition="top center",
                  mode='markers+text')

fig.show()

** UPDATE**

A possible solution in order to avoid the problems in legend is

import plotly.express as px
import plotly.graph_objs as go
import pandas as pd

rows=[['501-600','15','122.58333','45.36667'],
      ['till 500','4','12.5','27.5'],
      ['more 1001','41','-115.53333','38.08'],
      ]

colmns=['bins','data','longitude','latitude']
df=pd.DataFrame(data=rows, columns=colmns)
df = df.astype({"data": int})

fig=px.scatter_geo(df,lon='longitude', lat='latitude',
                      color='bins',
                      opacity=0.5,
                      size='data',
                      projection="natural earth")

fig.add_trace(go.Scattergeo(lon=df["longitude"],
              lat=df["latitude"],
              text=df["data"],
              textposition="middle center",
              mode='text',
              showlegend=False))
fig.show()

Answered By: rpanai

Answer 2

Late but as of now (Jan 2023) the following is working (assuming ‘data’ is a df column):

px.scatter_geo(text='data' .....

Answered By: Custos Mortem

Python plotly.express – add labels in scatter_geo

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