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HowTo: Install veil2 on Debian Buster
Veil2 is a database security layer realized as Postgresql extension, written in C.
Anouncement: Amqtt_db relational persistance layer for the amqtt MQTT broker
The Amqtt_db relational persistance layer enables the Amqtt MQTT broker to effectively store MQTT data in typed DB columns.Amqtt_db can can utilize all DB-Systems supported by SQLAlchemy and the next release targets timescaleDB for really high performance applications.
Homeassistant on RaspberryPi 4
I struggled a lot to bring Homeassistant to work. Here some of my failures and solutions.
Disc packing problem: Testing of the circular boundary code for Voronoi diagrams
Our prototype code is running. But did we cover all special cases and does it work with more than a handfull of data points?
Disc packing problem: Circular bounding box for voronoi diagrams
Still working on the disc packing problem. I need a seed for the Voronoi disc algorithm first.
Working with high-Level tools weakens your math
A pitfall to learn from
Closest disc packing in Python
My spare time project. Find the closest disc packing in Python.
Apollonius tenth problem: Tangent circle to three other circles: Effectively solved by moebius transformation
Today I played around with circles. My aim is to implement a python package for closest disc packaging. But first things first: Any algorithm in this category has the need to determine the tangent circle to three other circles effectively.
Playing with SolidPython
Most of my 3D models are for industrial use and therefore made with VariCAD. I have done some "artistic" things in Blender, but I am to old to learn Blender properly. Today I was looking for a 3D modell of a pencil holder to organize my physical desktop. There was nothing of the shelf that fullfills my needs, but some honeycomb designs were promising. So I liked to tweak them, but how?
Weitere Beispiele für die Barrierefreiheit
Transforming the QuadTree algorithm to numpy indexing
Thinking about pointers 8 bytes long on AMD64. We have less than 2^32 datapoints. So why not give 32 intergers a chance against pointers for optimization.
Performance optimization of the modified quadtree algorithm
Additive zoom level decomposition for e-profile Part IV
In the former articles of this series we described our strategy to find optimal zoom levels from arbitrary data. The idea is to avoiding that two points in same zoom level be too close together. Our first approach failed as we tested it with real data. We had missed a detail that we describe in this article. Also we give a solution to this problem.
Additive zoom level decomposition for e-profile Part III
Tweaking the quadtree algorithm for zoom level deconposition
Ein Barrierefreies Menü und ein TriStateButton
Eine neue Seite für die Barrierefreiheit: Inqbus Inclusive Design
Nature article on Python Numpy
Cython optimization of OOP Code
Cython comes with "enhancement types" to support OOP in Cython. Today I dived into this feature.
datenadler.de Open-Data-Plattform für Brandenburg online mit neuer Technologie
Die Open-Data-Plattform Brandenburgs wurde mit neuer Technologie verjüngt
New feature for pigpio_encoder
Additive zoom level decomposition for e-profile Part II
How to add adaptive zoom levels to your interactive graphics
Additive zoom level decomposition for e-profile Part I
For the https://e-profile.eu project we like to improve the interactive windprofiler windbarb plots.
Python Schulungen
Die Inqbus programming Academy wurde gegründet
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Working with large datasets
Building DRBD9 Debian packages
There are a few ostacles in the build process I like to spare you.
Migration Plone 4 Javascript to Plone 5
You have a Plone 4 package with some JS in it and like to use it one Plone 5? With a little luck it will work out of the box. Unfortunally not in every case. I will explain such a case for others to not repeat my errors.