# Top articles

• ## Schematizing the variance as a moment of inertia

06 octobre 2013 ( #R, #Statistics )

In order to make a presentation, I was wondering how to display the variance of a distribution, or the variance, of a sample on a graphic. Finally, I've found this solution: What is this “ellipse” with an arrow ? This is a picture commonly used in classical...

• ## Sample size determination for a Gaussian mean

13 avril 2013 ( #R, #Mathematics, #Statistics )

Sample size determination for a mean Sample size determination for a mean This article explains the methodology implemented in the Shiny application availbale at http://glimmer.rstudio.com/stla/samplesize_mean/ Statement of the problem Consider a preliminary...

• ## A reactive sliced 3D surface response in a html report with Shiny

15 mars 2013 ( #R, #graphics )

A reactive sliced 3D surface response A reactive sliced 3D surface response In my previous article I showed an interactive 3D surface response fitted from a model with two continous predictors. But when there is more than two continuous predictors, since...

• ## The binary splitting with the R gmp package - Application to the Gauss hypergeometric function

30 novembre 2012 ( #R, #Mathematics )

In this article you will firstly see how to get rational numbers arbitrary close to $$\pi$$ by performing the binary splitting algorithm with the gmp package. The binary splitting algorithm fastly calculates the partial sums of a rational hypergeometric...

• ## Using Julia to compute the Kantorovich distance

09 avril 2014

GLPK library In the article 'Using R to compute the Kantorovich distance' I have shown how to use the cddlibb C library through R with the help of the rccd R package to compute the Kantorovich distance between two probability measures (on a finite set)....

• ## Including an interactive 3D rgl graphic in a html report with knitr

08 mars 2013 ( #R, #graphics )