R

Blogs on the R software.

A Comparative Review of the RKWard GUI for R

May 24, 2018
By
A Comparative Review of the RKWard GUI for R

Introduction RKWard is a free and open source Graphical User Interface for the R software, one that supports beginners looking to point-and-click their way through analyses, as well as advanced programmers. You can think of it as a blend of … Continue reading →

Read more »

Le Monde puzzle [#1051]

May 17, 2018
By
Le Monde puzzle [#1051]

A combinatoric Le Monde mathematical puzzle of limited size: When the only allowed move is to switch two balls from adjacent boxes, what is the minimal number of moves to return all balls in the above picture to their respective boxes? Same question with six boxes and 12 balls. The question is rather interesting to […]

Read more »

maximal spacing around order statistics

May 16, 2018
By
maximal spacing around order statistics

The riddle from the Riddler for the coming weeks is extremely simple to express in mathematical terms, as it summarises into characterising the distribution of when the n-sample is made of iid Normal variates. I however had a hard time finding a result connected with this quantity since most available characterisations are for either Uniform […]

Read more »

maximal spacing around order statistics

May 16, 2018
By
maximal spacing around order statistics

The riddle from the Riddler for the coming weeks is extremely simple to express in mathematical terms, as it summarises into characterising the distribution of when the n-sample is made of iid Normal variates. I however had a hard time finding a result connected with this quantity since most available characterisations are for either Uniform […]

Read more »

maximal spacing around order statistics

May 16, 2018
By
maximal spacing around order statistics

The riddle from the Riddler for the coming weeks is extremely simple to express in mathematical terms, as it summarises into characterising the distribution of when the n-sample is made of iid Normal variates. I however had a hard time finding a result connected with this quantity since most available characterisations are for either Uniform […]

Read more »

maximal spacing around order statistics

May 16, 2018
By
maximal spacing around order statistics

The riddle from the Riddler for the coming weeks is extremely simple to express in mathematical terms, as it summarises into characterising the distribution of when the n-sample is made of iid Normal variates. I however had a hard time finding a result connected with this quantity since most available characterisations are for either Uniform […]

Read more »

Using EvilPlot with scala-view

May 11, 2018
By
Using EvilPlot with scala-view

EvilPlot EvilPlot is a new functional data visualisation library for Scala. Although there are several data viz libraries for Scala, this new library has a nice functional API for producing attractive, flexible, compositional plots which can be rendered in JVM applications and in web applications (via Scala.js). For a quick introduction, see this blog post … Continue reading Using EvilPlot with scala-view

Read more »

the riddle of the stands

May 10, 2018
By
the riddle of the stands

The simple riddle of last week on The Riddler, about the minimum number of urinals needed for n men to pee if the occupation rule is to stay as far as possible from anyone there and never to stand next to another man,  is quickly solved by an R code: ocupee=function(M){ ok=rep(0,M) ok[1]=ok[M]=1 ok[trunc((1+M/2))]=1 while […]

Read more »

No Slap in the Face to Those Who are Smiling

No Slap in the Face to Those Who are Smiling

There is an idiom in Chinese that I can roughly translate as “You shall not slap a person in the face when he is smiling at you”. This means if a person is showing a positive attitude, you’d better forgive him even if he has made a mistake. A couple of days ago, a Stack Overflow user named “Caddisfly” wrote his/her (hard to guess the gender from this nickname) first…

Read more »

Make the Right / Positive Things Easier to Do than Wrong / Negative Things

Make the Right / Positive Things Easier to Do than Wrong / Negative Things

Last week I saw a fantastic post written by Jay Hanlon from Stack Overflow titled “Stack Overflow Isn’t Very Welcoming. It’s Time for That to Change”. I wanted to stand up in front of my computer and applaud for five minutes after reading this post. It is great that Stack Overflow was admitting the problem publicly and showing the intention to fix it. First of all, I should make it…

Read more »


Subscribe

Email:

  Subscribe