Demo 1
MAUP: Income Across Texas
Interactive choropleth map. Tap any Texas county to zoom into census tracts and watch how the income picture changes — the same Modifiable Areal Unit Problem that affects our EV analysis.
12× Q4 vs Q1 income gap (tracts)
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Demo 2
Who Got Chargers First?
Cumulative buildout by income quintile, 2017–2024. The wealthiest tracts had 54% of their 2024 stock installed before the study period began. The poorest had 15–33%.
2–3 yrs Head start for Q5 vs Q1–Q2
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Demo 3
What Predicts New Chargers?
Interactive forest plot comparing negative binomial model results at tract vs block-group scale. Toggle between views to see how poverty shifts from non-significant to highly significant — MAUP in the models.
0.74 → 0.32 Poverty IRR: tract → block group
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Study at a glance
Dallas EV Equity, 2021–24
351
new public ports 2021–24
85%
tracts added no ports
2.77×
education IRR (tract NB)
0.19
SF housing IRR (bkg NB)
ACS 2019–23 · AFDC · OSM · TxDOT · 354 tracts / 806 block groups
Demo 4
Dallas City Maps
Charger locations · port-density choropleth · income quintile overlay · hot/cold spot clusters. Four maps, one city.
4
maps
354
tracts
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