Visual-Only Multivariate Map

Traditional cartographic approach using only visual variables

🎵 Compare with Sound Version

Open Sound-Enhanced Version →

Try both versions to compare how sound vs. visual variables handle multivariate data!

Instructions:
1. Click on any city marker
2. Observe how 4 data variables are represented visually:
• Size: Population (bigger = more people)
• Color: GDP per capita (green=rich, orange=medium, purple=poor)
• Shape: Geographic area (triangle=large, trapezoid=medium, circle=small)
• Position: Geographic location
100%

Visual Legend

Size = Population

Large circle = High population
Small circle = Low population

Color = GDP per Capita

Green = High GDP ($50k+)
Orange = Medium GDP ($20-50k)
Purple = Lower GDP (<$20k)

Shape = Geographic Area

Triangle = Large area
Trapezoid = Medium area
Circle = Small area

⚠️ Visual Challenges

• Can you quickly distinguish all 4 variables simultaneously?
• Which relationships are hard to see?
• How does visual "crowding" affect readability?
• What happens with overlapping symbols?

Click a city to see data encoding...