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One Gigabyte per Survey, of Which 108 KB Goes in the Database

Here is the disk layout of one mobile mapping survey — a vehicle with a LiDAR scanner and a panoramic camera, driven along a road: data/001_MMS/ 507…

gis postgres architecture webdev

There is a layer in my database called 1 . Somebody created it, presumably by accident, and it sat there for months looking harmless. It was the onl…

postgres gis django webdev

I was writing a blog post about the architecture of a system I built when I found a bug in it. This is that bug, and the much more interesting thing…

gis postgres geospatial datascience

Someone asks for yesterday's maximum temperature in Belgrade. We don't have it. We won't have it for another four days, and when we do have it, the…

opensource data gis api

When I started building Weather Experience , I wasn't planning to release an open-source project. I simply wanted to answer a question: Could I buil…

python weather opensource gis

Originally published on my site . I build an offline motorcycle navigation app. It routes on-device with Valhalla , snaps the rider's GPS onto the r…

gis map kotlin mobile

Village Finder is an open-source, serverless, and multilingual map tracking over 78,000 villages across Andhra Pradesh, Telangana, Karnataka, and Ta…

opensource gis india opendata

Geocoding large address datasets (finding latitude and longitude coordinates for addresses) can quickly become expensive, especially when you need t…

geocoding gis data javascript