ggplot2 improves the graphics drawn with R. A (very) short adaptation time is needed to find how to make graphs equivalent to the ones of graphics. For example, to draw the curve of a function, there is no function similar to curve(). You have to use qplot() by setting the ... [Read more...]

With print() If you are an advanced R user, you probably know the lattice and the ggplot2 packages. They allow you to plot elegant graphics with less code (Hocking, 2009 and Sueur, 2010). If you know these two packages, you should hardly use plot() for your graphs. If you read my article ... [Read more...]

In this article, you will find a list of Internet resources that may be useful if you are programming in R. If you have a problem with R and [Read more...]

I wanted to write contingency tables in HTML with hwrite(). I realized that the method hwrite() does not exist for the table objects. I could use as.data.frame(), but the table produced is non-intuitive. I did a search on R-bloggers and I quickly found the solution to my problem: ... [Read more...]

In this article, I show you how to create a data.frame from a text submitted in a textarea field with FastRWeb. Requirements FastRWeb installed Knowledge of webforms ?read.table Experience in HTML5 Submit This example needs two scripts. The first one contains the webform. I wrote a FastRWeb script ... [Read more...]

This is an edited version of A Direct Marketing In-flight Forecasting System. The original article was written by Shannon Terry and Ben Ogorekm, Nationwide Insurrance, in order to enter the “Applications of R in Business” contest organised by Revolution Analytics. This is the winning entry of the contest. I added ... [Read more...]

FastRWeb is an infrastructure that allows any webserver to use R scripts for generating dynamic content, such as web pages and graphics. In this post, you’ll learn how to install and set up FastRWeb on a Mac. This tutorial is expendable to any Unix-like operating system. It is an ... [Read more...]