447 search results for "knitr"

How to plot lattice and ggplot2 graphs with FastRWeb

April 10, 2012
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How to plot lattice and ggplot2 graphs with FastRWeb

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 on FastRWeb, you

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An intro to R

April 5, 2012
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An intro to R

A few weeks back I gave a talk at the local Berkeley R meetup group. The idea was to help people not make the same mistakes I made when I first started out learning R. It was the first time I made an entire presentation with Deck.js and I generated the syntax highlighted R code

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More on Philadelphia Homicide

March 31, 2012
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More on Philadelphia Homicide

I've been doing more analysis of the Philadelphia Homicide data that the Philadelphia Inquirer has published, and presented some of it at the Philadelphia UseR group yesterday. My slides and source are on github.I should be clear tha...

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Students: Help improve R with the Google Summer of Code

March 27, 2012
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The Google Summer of Code project provides funding for students to write and contribute code to open-source projects of interest to Google. And given that R is widely used at Google, it's certainly a project of significant interest. So for the fifth year running the R Project will mentor students as part of GSOC 2012 to develop packages and...

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Google summer of code 2012 – and R – a call for students

March 26, 2012
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Google summer of code 2012 – and R – a call for students

Google has again accepted R as a mentoring organization for Google Summer of Code. R has successfully participated in GSoC in multiple previous years, and is excited to be returning this year as a mentoring organization. In a nutshell:  If you are a student looking to write some code for the R community, Google is willing to pay you...

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Citing R packages

March 20, 2012
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Citing R packages

I’m not always careful in citing all the R packages I use. R actually has some rather nice built-in mechanisms to support this, so I really have no excuse. Here’s some quick examples: To cite the ouch package in publications use: Aaron A. King and Marguerite A. Butler (2009), ouch: Ornstein-Uhlenbeck models for phylogenetic comparative

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Ideas on A Really Fast Statistics Journal

March 15, 2012
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I was writing comments on the blog post A proposal for a really fast statistics journal, and I realized the comment box was too small to write down my ideas. I like the proposal a lot, and I feel really bad about the current model of submitting and rev...

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How to convert contingency tables to data frames with R

March 14, 2012
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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: the as.data.frame.matrix() function. The contingency table A

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A Direct Marketing In-flight Forecasting System

February 29, 2012
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A Direct Marketing In-flight Forecasting System

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 some notes in the third

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makeR: An R Package for Managing Document Building and Versioning

February 19, 2012
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If you are reading this vis-à-vis R-Bloggers, then you know how good R, LaTeX, and Sweave are for generating reports and/or conducting reproducible research. It has been particularly valuable for me in Institutional Research where there are many reports that I need to prepare on a regular basis (some monthly, some quarterly, some annually). However, one issue

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