plot profiling
Profiling in R R has a built in performance and memory profiling facility: Rprof. Type [crayon-577359b77f340681715005-i/] into your console to learn more. The way the profiler works is as follows: you start the profiler by calling Rprof, providing a filename where the profiling data should be stored you call the R functions that […]

R profiling

reference semantics 2
Question I recently got a mail from Václav on reference semantics in data.tree, reading as follows: Dear Christoph, I am rather inexperienced when it comes to environments in R and henceforth I apologize if my question is basic; however, my colleagues are no better than me to answer my question. I […]

Reference semantics in R

I got a note from Karim Lahrichi, who even thinks about math when he’s supposed to be drinking beer. The bar puzzle they were trying to solve goes like this: Using all of the numbers 1, 3, 4, 6 exactly once, and any combination of: addition, subtraction, multiplication and division (and parenthesis […]

Solving Math Puzzles with data.tree

visualize ahp
The latest version of the ahp package contains lots of new features and visualizations!

ahp 0.2.4 on CRAN

AHP ShowTable 6
AHP lets you analyse complex decision making problems. We have recently released the initial version of the R ahp package on github: gluc/ahp.

R ahp package on github

Shiny Server 1
In this beginner’s level tutorial, you’ll learn how to install Shiny Server on an AWS cloud instance, and how to configure the firewall. It will take just a few minutes!

Installing RStudio Shiny Server on AWS

treemap 1
This example is inspired by the examples of the treemap package. You’ll learn how to convert a data.frame to a data.tree structure navigate a tree and locate specific nodes use Aggregate and Cumulate manipulate an existing tree, e.g. by using the Prune method use data.tree in connection with the treemap package

TreeMap World Population visualisation