City Skylines
Create a free skyline for any city on earth!
Tag: data visualization
How to create Paper (Mario) Maps
Pretty Paper (Mario) Maps quickly done with QGIS and Aerialod.
Guide to 3D OSM Building Models - Milan Edition
OSM data offers a vast amount of information about our cities. In this guide I focus on working and styling OSM building data for 3D-modeling in Aerialod for close-to-reality models. Tl;dr: Use OSM building levels, emulate roofs with shapeburst effect and use Sketchfab for interactive 3D models
Guide to 3D OSM City Models - Trier Edition
There are few cities providing open source LIDAR data for 3D-modeling. However, leveraging OSM building, road and landuse data gives you neat city models in no time!
Raster-Based 3D Models with QGIS, OSM and Aerialod
Creating 3D models from raster or vector data has never been that easy! This tutorial takes you through the whole process from vector/raster data to 3D in just 3 steps.
An Introduction to HyperLogLog
Have you ever wondered how HyperLogLog works? Or have you never heard of it at all? In this post I explain the wonderful algorithm of Flajolet et al. from scratch and in a very simple manner.
Using HyperLogLog with Leaflet-Hexbins
Leaflet-Hexbins is a powerful tool to aggregate data and visualize it quickly on a map. It can size the hexbin radius based on a feature values. But what if we used HyperLogLog data to preserve user-privacy? This post will provide a convenient way to quickly perform on-the-fly HyperLogLog unions for leaflet-hexbins. No more backend-constraint for HyperLogLog There are many HyperLogLog implementations out there but few work as well as postgres-hll and js-hll. They can even talk to each other by exchanging hexstrings! Usually postgres-hll is pretty much the standard extension to use, when dealing with HyperLogLog but is obviously bound to a postgres database running somewhere. With js-hll, the backend-constraint for HyperLogLog is gone, just so that users can perform any HyperLogLog action in their frontend!
