Spatial Analysis & Data Engineering
Geographic Information Systems (GIS) form the backbone of modern remote sensing and satellite data analysis, urban planning, environmental monitoring, and infrastructure management. My technical focus revolves around end-to-end spatial data engineering—from raw vector digitization and georeferencing to multi-layer spatial overlays, geostatistical analysis, and publication-ready cartography.
Whether performing watershed delineation from high-resolution DEMs using QGIS spatial analysis, building geodatabases in ArcGIS Pro and ArcPy automation, or scripting custom pipelines with Python geospatial data processing, I utilize industry-standard formats (OGC standards, GeoPackage, Shapefile, PostGIS, GeoTIFF, and Cloud-Optimized GeoTIFFs).
Demonstrated GIS Core Competencies
Vector Digitization & Georeferencing
Georeferencing of cadastral maps, historical toposheets, and aerial imagery using polynomial and projective coordinate transformations with structured root-mean-square error (RMSE) verification. Structured topology validation to eliminate slivers, gaps, and overlaps.
Terrain & Hydrological Modeling
Processing Digital Elevation Models (DEMs) and Digital Surface Models (DSMs) derived from LiDAR point cloud and 3D surface modeling to generate slope, aspect, hillshade, topographic contours, and stream network extractions.
Spatial Multi-Criteria Evaluation (MCE)
Weighted Overlay Analysis (WOA) and Analytical Hierarchy Process (AHP) modeling for site suitability selection, environmental vulnerability assessments, and urban growth risk zones.
Spatial Databases & PostGIS
Spatial SQL querying, indexing with R-Tree/GiST, geometric transformations (ST_Buffer, ST_Intersection, ST_DWithin), and serving data directly to Web GIS interactive mapping portals.
24-Year Urban Expansion & LULC Analysis (Ahmedabad)
Applied extensive vector analysis and multi-temporal transition matrix modeling to quantify a 60.9% urban footprint expansion between 2000 and 2024. Combined DEM elevation layers, road network buffers, and administrative boundaries into comprehensive multi-layered cartographic outputs.