Visualization of noise pollution for the entire world based on top of OSM data. Search for your city and check for the noisy places. Using global street, landuse and building data from OpenStreetMap we can approximate where noise pollution might happen. We use a very simple noise model inspired by noise pollution concept of Cities Skylines.
If you are working on a web map it is difficult to see what changes a line of CartoCSS can cause. With visual regression testing you can create a diff between versions and ensure quality.
In summer of 2015 a good friend and I did a biketour from Switzerland to Greece across the Balkan states. The entire tour was GPS tracked and as a special memory of this experience I wanted to create a T-shirt out of the data of our journey. You can find the project on Github.
Building realtime apps on top of GitHub is kind of a pain because GitHub only provides a plain HTTP API to it’s public events. This is why I built the GitHub Realtime Relay (GHRR) which polls all public events and then relays them directly via websockets. This is probably the simplest way to create a realtime application on top of GitHub.
OpenStreetMap now provides public access to the access logs of their tile map server from 2014 until today. In this article I will show you how to parse the access logs with Bash and Python and visualize the data with CartoDB.
A simple guide how to create a stateful service with CoreOS fleet and AWS volumes. If you need to run a stateful service which does not need to be highly available this guide will get you up to speed.
I analyzed 370 million files of 614k Github repos to find out which Continous Integration services developers use. I looked at public Github repos that were recorded in the GHTorrent dataset of 2015-01-29 and are not forks of other projects. The dataset is available at the repostruct Github Repository.
In 2011 the Chaos Computer Club revealed a major complexity attack vulnerability that works across all major languages. PHP addressed the vulnerability for forms but never really fixed it. Nowadays every web application uses a JSON API, which is still vulnerable to complexity attacks.
I will compare and review the different APIs of end user cloud storage providers. I will only look at the HTTP API aspect, not how this API is implemented for various languages. The motiviation behind this is research for my common cloud storage API.
Maputnik is is a free visual style editor for maps targeted at developers and designers. It allows you to pull in data sources and style the vector features with the visual editor to build your own custom map design!
Import CSV and JSON into PostgreSQL the easy way. This small tool abstract all the hassles and swearing you normally have to deal with when you just want to dump some data into the database.
A smarter Dockerfile linter that helps you build best practice Docker images. The linter is parsing the Dockerfile into an AST and performs rules on top of the AST. It additionally is using the famous Shellcheck to lint the Bash code inside RUN instructions.
Pipecat allows you to scale any program supporting the FACK contract using traditional UNIX pipes. Think of it as netcat but with message acknowledgments. It is the successor of redis-pipe.
OpenMapTiles is an extensible and open vector tile schema for a OpenStreetMap basemap. It is used to generate vector tiles for openmaptiles.org and openmaptiles.com.
The OSM2VectorTiles project is my study project and bachelor thesis. It makes is possible to create vector tiles from OpenStreetMap data. Create a custom base map in minutes with our free vector tiles from OpenStreetMap data. This is the easiest way how to switch to OSM thanks to MapBox open-source tools. Design your own map of world or country, serve raster or vector tiles from any virtual server or your own infrastructure, even offline behind a firewall.
A very accessible PostGIS query editor and visualizer. Getting started with PostGIS is harder than it should be. We spent much time in psql and wished to visualize our queries quickly without big complicated tools.
This is a little experiment that shows how far you can go with the C++ 14 auto return type and templates. C++14 has such powerful type deduction that it is possible to transpile Python into C++ without worrying about the missing type annotations in python. Only a small subset of Python is working and you will encounter many bugs. The goal is to showcase the power of C++14 templates and not to create a fully functional transpiler.
Expose a program with a simple call to nigit to the web. The small web server wraps around the program and exposes it as HTTP API. This comes in handy whenever you want to expose a legacy program without writing a web application and doing complicated subprocessing yourself.
