Week 8 - Final TODO List

Last Updated: October 23, 2025

✅ COMPLETED

• Updated normalization example to use Tissot projection distortion (better pedagogical fit)
• Renamed image63.png → tissot-equirectangular.png
• Renamed image76.png → tissot-circles-comparison.png
• Created duplicate solution figures (election-choropleth-bad, nyt-proportional-lead-solution, nyt-cartogram-solution)
• All foundational figures in place (23/28 figures complete)

⚠️ STILL NEEDED (5 figures)

1. binning-comparison.png

Location: Slide 18 (Pitfall 2: Classification) Source: PPTX Slides 213-219 Action Required: Create a composite image showing three maps side-by-side:

• Equal Interval binning
• Quantile binning
• Natural Breaks (Jenks) binning

Suggestion: Screenshot or extract individual maps and combine in image editor, OR take screenshot of a slide that shows all three together.

2. rainbow-colorscale-bad.png

Location: Slide 20 (Pitfall 3: Color - Bad Example) Source: PPTX Slides 221-222 Action Required: Extract map showing rainbow color scale

3. good-sequential-scale.png

Location: Slide 21 (Pitfall 3: Color - Good Example 1) Source: PPTX Slides 221-222 or create from ColorBrewer Action Required: Extract or create map with proper sequential scale (e.g., Blues, YlOrRd, Viridis)

4. good-diverging-scale.png

Location: Slide 21 (Pitfall 3: Color - Good Example 2) Source: PPTX Slides 221-222 or create from ColorBrewer Action Required: Extract or create map with proper diverging scale (e.g., RdBu, BrBG)

5. election-2016-red.png

Location: Slide 22 (Pitfall 4: Geography/MAUP) Source: PPTX Slides 66-67 Action Required: Extract the famous “sea of red” 2016 election map

📊 Progress: 82% Complete (23/28 figures)

🎯 Extraction Instructions

Option 1: From PPTX (recommended)

cd ~/Dropbox/2025-CS-GY-6313/bertini/InfoVis\ Material/Lecture\ slides/
open "7-Visualizing Geographical Data.pptx"
# Navigate to slides 66-67, 213-219, 221-222
# Right-click images → "Save as Picture" → save to:
#   ~/github/ctsilva.github.io/2025-InfoVis-CSE/slides/figs/week8/

Option 2: Screenshot Method

# Open PowerPoint, go to slide
# Take screenshot (Cmd+Shift+4 on Mac)
# Crop and save with appropriate filename

Option 3: Alternative Sources

• ColorBrewer examples: https://colorbrewer2.org (for good color scales)
• 2016 Election map: Search for “2016 election map county level” - many public sources

✅ After Extraction

1. Verify all 5 images are in place:

   cd ~/github/ctsilva.github.io/2025-InfoVis-CSE/slides/figs/week8/
   ls -lh binning-comparison.png rainbow-colorscale-bad.png \
         good-sequential-scale.png good-diverging-scale.png \
         election-2016-red.png
   

2. Re-render slides:

   cd ~/github/ctsilva.github.io/2025-InfoVis-CSE/slides/
   quarto render week8-geovis-2d-maps.qmd
   

3. Preview:

   quarto preview week8-geovis-2d-maps.qmd
   

4. Commit:

   git add week8-geovis-2d-maps.qmd week8-geovis-2d-maps.html \
           week8-geovis-2d-maps_files/ figs/week8/
   git commit -m "Week 8 Lecture 1: Complete geovisualization fundamentals slides"
   

📝 Notes

• Slides currently render but will show broken image placeholders for the 5 missing figures
• The normalization example was improved - it now uses Tissot circles to demonstrate projection distortion, which ties nicely into the broader projection discussion
• All other sections are complete and ready for presentation