Delakshan Joel Portfolio Index
One link, every project

The Full Field Index

Every live GIS, remote-sensing, and spatial-statistics project in one place — Sri Lankan urban growth to Ruhr spatial econometrics to German transit accessibility. Each entry below links to its written case study and, where one exists, its standalone interactive webmap.

Case study Interactive webmap

Projects

6 entries · 13 interactive webmaps
LK · SRI LANKA

GIS & Planning Portfolio

Four Local Area Development Plans (Ja-Ela, Ragama, Jaffna), remote-sensing urban-growth modelling for Colombo and Jaffna, urban-morphology metrics, and a saltwater-intrusion disaster-risk assessment for Sri Lanka's Southern Province.

4 Local Area Development Plans r = 0.598 NDBI–density correlation 24 divisions flood-risk mapped
DE · RUHR / GLOBAL

Spatial Statistics Project

A six-project methods hub: MGWR & five-regime Spatial Durbin modelling, a GWR coefficient explorer, regime- and grid-level landscape-metrics monitors for Dortmund, LISA cluster diagnostics for the Ruhr, and a four-dataset spatial-statistics methods portfolio (Brexit, Tokyo, Sri Lanka, US inequality).

0.81–0.89 MGWR vs. 0.52–0.59 OLS Chow test p < .001, 9 models 1,493-cell landscape-metrics grid
DE · DORTMUND

Walkability & Service-Area Analysis

Network-based (not straight-line) 400m walking service areas across Dortmund's 2,832km footpath network, computed against transit stops and grocery stores, aggregated to district-level coverage.

49.7% footpath network within 400m of transit 15.5% footpath network within 400m of grocery
DE · MÜNSTER

Multimodal Accessibility Analysis

GTFS bus-route frequency analysis combined with 400m network walkability for commercial, education, and health amenities, overlaid on Münster's bicycle network to see where cycling closes the walking-distance gap.

59.6% commercial coverage in historic core (48143) Corrected mislabeled health dataset
DE · MÜNSTER

Composite Transport Accessibility Index

A composite accessibility index for a 1,331-cell grid, combining street-network centrality, pedestrian density, and public-transport access via Queen-contiguity spatial weights, with Local Moran's I (LISA) cluster diagnostics.

1,331-cell composite index grid 3 standardized indicators combined
GLOBAL

Energy Transition & Commodity Trade Analytics

The global fossil-to-renewable electricity capacity shift (2010–2024) paired with a UN Comtrade analysis of global copper export trends through the 2021 commodity rebound.

Solar 32% CAGR, 2010–2024 +18.7pp global capacity share +69% YoY China copper exports, 2021