Creating Interactive Statistical and Geographic Charts

Plotly supports charts for comparing distributions, examining relationships, and displaying geographic information.

Creating a Box Plot

A box plot helps compare numerical distributions across groups.

import pandas as pd

import plotly.express as px

df = pd.DataFrame({

"Department": ["IT", "IT", "IT", "Sales", "Sales", "Sales"],

"Salary": [50000, 65000, 70000, 35000, 45000, 55000]

})

fig = px.box(

df,

x="Department",

y="Salary",

color="Department",

title="Salary Distribution by Department"

)

fig.show()

The chart displays the median and quartiles, along with potential outliers. Hovering over observations can provide more information about individual values.

Creating a Heatmap

Heatmaps represent values through color intensity and can be useful for comparing correlations.

import pandas as pd

import plotly.express as px

df = pd.DataFrame({

"Advertising": [1000, 1500, 2000, 2500, 3000],

"Website_Visits": [200, 250, 310, 370, 430],

"Sales": [8000, 10000, 13000, 15000, 18000]

})

correlation = df.corr(numeric_only=True)

fig = px.imshow(

correlation,

text_auto=".2f",

color_continuous_scale="RdBu_r",

zmin=-1,

zmax=1,

title="Correlation Heatmap"

)

fig.show()

The color scale represents correlation values from -1 to +1. The numerical annotations make the relationships easier to compare.

Creating a Geographic Map

Plotly can visualize data associated with geographic locations. For example, a dataset containing country names and sales values can be displayed on a world map.

import pandas as pd

import plotly.express as px

df = pd.DataFrame({

"Country": ["India", "United States", "Germany", "Japan"],

"Sales": [50000, 80000, 45000, 60000]

})

fig = px.choropleth(

df,

locations="Country",

locationmode="country names",

color="Sales",

hover_name="Country",

title="Sales by Country",

color_continuous_scale="Blues"

)

fig.show()

A choropleth map colors geographic regions according to their associated values. Geographic names must match Plotly's location recognition, and some maps may require internet access to retrieve geographic boundaries.