Georeferencing Scanned Paper Maps & Imagery: 5 Steps to Match Real-World Coordinates 1. Introduction: What Is Georeferencing? When mastering Georeferencing Scanned Maps QGIS ArcGIS Pro workflows, Imagine you find a scanned paper map showing roads, settlements, rivers, and administrative boundaries from 1960. The map is clear, but when you load the image into … Read more
Geographically Weighted Regression (GWR) vs. Multiscale GWR (MGWR): A Practical GIS Guide 1. Introduction: Why Spatial Relationships Change Across Geography When exploring spatial modeling techniques like GWR vs MGWR GIS, Imagine you are studying housing prices across a city. You want to understand how distance to the city centre, household income, and access to … Read more
Catchment Area Analysis Using Isochrones (Travel Time Maps) in QGIS 1. Introduction: Why Use Isochrones Instead of Buffers? When conducting Isochrones Travel Time Maps QGIS catchment area analysis In urban transportation planning, knowing how far a person can travel is just as important as knowing how close a facility appears on a map. A school … Read more
Anselin Local Moran’s I (LISA) in GIS: How to Identify Spatial Outliers & Clusters 1. Introduction: What Is Local Moran’s I (LISA)? When using Anselin Local Morans I LISA GIS, Imagine you are mapping household income across 100 urban neighborhoods. Most neighborhood’s have similar income levels to their neighbors, but a few stand out. … Read more
Random Forest Classification for Land Cover Mapping Using Python & GeoPandas 1. Introduction: Moving from Desktop GIS to Machine Learning When exploring Random Forest Classification Python GIS land cover mapping is a fundamental application of remote sensing. It involves identifying surface categories such as forests, cropland, built-up areas, water bodies, and bare soil from … Read more
5 Layout Design Rules for Professional GIS Maps (ArcGIS Pro & QGIS) Introduction: Why Professional Map Design Matters When applying Layout Design Rules GIS Maps, remember that any GIS map can contain accurate data and sophisticated spatial analysis yet still communicate poorly if its layout is cluttered, its labels overlap, or its colours confuse … Read more
Understanding Coordinate Reference Systems (CRS): Datum Transformations & EPSG Codes Explained 1. Introduction: Why Coordinate Reference Systems Matter in GIS Imagine you are creating a GIS map of a river catchment. You import a river network, a digital elevation model (DEM), administrative boundaries, and satellite imagery. Each dataset appears in a different location, and the … Read more
Shapefile vs. GeoPackage vs. File Geodatabase: Which Format Should You Use? 1. Introduction: The Evolution of GIS Data Storage Understanding Shapefile vs GeoPackage vs File Geodatabase GIS criteria is essential because choosing the right spatial data format is a fundamental decision in any GIS project. Choosing the right spatial data format is an important … Read more
PostGIS Starter Guide: 5 Spatial SQL Queries Every GIS Student Should Know 1. Introduction: Why GIS Students Should Learn PostGIS Welcome to this comprehensive PostGIS Starter Guide spatial SQL queries overview, designed to help GIS students master database management. Traditional GIS workflows often rely on individual files such as Shapefiles, GeoJSON, and GeoPackage datasets. … Read more
How to Calculate Leaf Area Index (LAI) from Satellite Imagery for Precision Agriculture 1. Introduction: Understanding Leaf Area Index in Precision Agriculture Modern agriculture increasingly relies on satellite remote sensing to monitor crop growth, identify stressed areas, estimate biomass, and improve the efficiency of farm inputs. One important vegetation canopy metric is the Leaf … Read more