Map Visualization Tutorial

Map Visualization: SO₂ Concentrations in India

We’ll be creating a Map Visualization to represent SO₂ levels across different locations in India.

Step 1: Upload Data to Flourish

Step 1
- Open Flourish and select 3D Map > Heat Map.
- Upload your dataset.

Step 2: Prepare the Data

Step 2
- Load the dataset and extract relevant columns:
- Latitude
- Longitude
- SO₂ Concentration (µg/m³)
- Ensure the data is cleaned and formatted correctly.

Step 3: Configure the Data

Step 3
- In the points section, set the ‘Appearance’ as points.
- Set Latitude and Longitude as location points.
- Set SO₂ Concentration as the circle size to represent pollution levels.
- Choose a color scale to indicate severity (e.g., yellow for low, red for high).

Step 4: Customize Appearance

Step 4
- Adjust circle opacity, size scaling, and tooltips for clarity.
- Add a legend to show the pollution scale.
- Set an appropriate base map style.

Step 5: Publish and Embed

Step 5
- Click “Publish & Export” in Flourish.
- Copy the Embed URL.

Final Circle Map

Why Use a Circle Map for SO₂ Concentrations?

  • Represents pollution hotspots geographically.
  • Clear size scaling shows pollution severity at each location.
  • Provides a spatial understanding of SO₂ distribution across India.
  • Makes trends in urban vs rural pollution more visible.