An easily phrased (and solved?) Le Monde mathematical puzzle that does not [really] require an R code: The five triplets A,B,C,D,E are such that and Given that find the five triplets. Adding up both sets of equations shows everything solely depends upon E1… So running an R code that checks for all possible values of […]
A few months ago I did a mini project using open crime data and R to create crime visualisations. At that time, I was already thinking about a web app using Shiny but I couldn't justify the time to develop the app and then set up a server etc. Not unti...
A fishR user asked me if I had Weisberg Linear Growth Model (LGM) vignette. In the past, the Weisberg LGM referred to the fixed-effects models described in Weisberg (1993) and implemented in software that was written in XLISP-STAT and distributed … Continue reading →
Version 0.2.1 of RcppCNPy is now on CRAN earlier. This version is a minor upgrade with a few small changes as detailed in the NEWS file: Changes in version 0.2.1 (2013-11-28) Synchronized code with the cnpy repository Added new function to ... […]
Most books that discuss regression modeling start out and often finish with Ordinary Least Squares (OLS) as the technique to use; Generalized Least Squares (GLS) sometimes get a mention near the back. This is all well and good if the readers’ data has the characteristics required for OLS to be an applicable technique. A lot […]
The biggest German railway company, the 'Deutsche Bahn', is subject of frequent emotional discussions about being late all the time. A big German newspaper, the Süddeutsche Zeitung built the so-called 'train monitor' (Zugmonitor). The data is (or was) made available in cooperation with OpenDataCity: http://www.opendatacity.de/zugmonitor-a […]
Today I want to share the test and implementation for the Fast Threshold Clustering Algorithm (FTCA) created by David Varadi. This implementation was developed and contributed by Pierre Chretien, I only made minor updates. Let’s first replicate the results from the Fast Threshold Clustering Algorithm (FTCA) post: The clusters are stable and match David’s res […]