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Donut Polygons in QGIS, ArcMap, ArcGIS Pro and geoJSON


In this tutorial I explain the creation of Donut Polygons in QGIS and ArcGIS Pro. Follow the simple steps or watch the short videos.

Let’s Write a Decision Tree Classifier from Scratch: Machine Learning Recipes #8


Hey everyone! Glad to be back! Decision Tree classifiers are intuitive, interpretable, and one of my favorite supervised learning algorithms. In this episode...

Custom Google Maps for WordPress


In this video I show you how to add a custom Google Map to your WordPress website using an easy to use free plugin. A custom google map is a great way to show off things like your office locations, stores, where you went on holiday or anything else that

QGIS come analizzare un grafo stradale con il plugin pgRoutingLayer


In questo video tutorial Federico spiega come scaricare un grafo stradale percorribile, come convertirlo in formato OSM, come importarlo in un database pgrou...

Drive-time Isochrones from a single Shapefile using QGIS, PostGIS, and Pgrouting


This is a guest post by Chris Kohler @Chriskohler8. Introduction: This guide provides step-by-step instructions to produce drive-time isochrones using a single vector shapefile. The method described here involves building a routing network using a single

Areal-Weighted Re-Aggregation


In this tutorial, we will compare race (as defined by the US Census) in House Congressional Districts in two states, North Carolina and Indiana, that differ with respect to the shape of their districts and reflect different histories of gerrymandering.

Map Monday: Is the American Dream Still Affordable?


The story map Is the American Dream Still Alive reveals insights about the relationship between demographic changes and affordable housing. Map Monday: Il Sogno Americano è ancora abbordabile? La story map "Il Sogno Americano è ancora Vivo" rivela opinioni

What is GeoJSON and why should you care?


GeoJSON is a core technology in web GIS. It allows vector data to be stored in a text-based format that is easily handled in JavaScript, sent across the internet, or stored in a database (including web storage). This makes it a natural fit for web

A Really Good Guide on Location Intelligence Implementation


Follow this step-by-step Location Intelligence guide to turn your location data into business outcomes. Un'Ottima Guida sull'Implementazione della Location Intelligence Segui passo passo questa guida sulla Location Intelligence per trasformare i tuoi

4 Powerful Historical Maps Every Data Analyst Should Know


These four historical maps reveal that innovations in a map's perspective, data, and aesthetics all contributed to the complex five-decade evolution of location intelligence. 4 Potenti Mappe Storiche che Ogni Data Analyst Dovrebbe Conoscere Queste quattro