439 search results for "knitr"

Chillin’ at UseR! 2014

July 7, 2014
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Chillin’ at UseR! 2014

This year’s UseR! conference was held at the University of California in Los Angeles. Despite the great weather and a nearby beach, most of the conference was spent in front of projector screens in 18° c (64° f) rooms because there were so many interesting presentations and tutorials going on. I was lucky to present my R package...

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Introduction to R for Life Scientists: Course Materials

July 7, 2014
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Introduction to R for Life Scientists: Course Materials

Last week I taught a three-hour introduction to R workshop for life scientists at UVA's Health Sciences Library.I broke the workshop into three sections:In the first half hour or so I presented slides giving an overview of R and why R is so awesome. Du...

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UseR! 2014 Tutorials

July 3, 2014
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UseR! 2014 Tutorials

by Joseph Rickert UserR! 2014 got under way this past Monday with a very impressive array of tutorials delivered on the day that the conferences organizers were struggling to cope with a record breaking crowd. My guess is that conference attendance is somewhere in the 700 range. Moreover, this the first year that I can remember that tutorials were...

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useR! 2014 is underway with 16 tutorials

June 30, 2014
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The annual worldwide user conference useR! 2014 is underway at UCLA, beginning with a full day of tutorials. This year's useR! conference is a record-breaker with more than 700 attendees, so most of the tutorial sessions have been jam-packed. The tutorials cover a diverse array of R applications: data management, visualization, statistics and biostatistics, programming, and interactive applications. Follow...

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A Simple Shiny App for Monitoring Trading Strategies

June 25, 2014
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A Simple Shiny App for Monitoring Trading Strategies

In a previous post I showed how to use  R, Knitr and LaTeX to build a template strategy report. This post goes a step further by making  the analysis  interactive. Besides the interactivity, the Shiny App also solves two problems : I can now access all my trading strategies from a single point regardless of the instrument traded.

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Come see RStudio at UseR! 2014

June 24, 2014
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Come see RStudio at UseR! 2014

The R User Conference 2014 is coming up fast in Los Angeles! RStudio will be there in force to share the latest enhancements to shiny, ggvis, knitr, dplyr. R markdown, packrat and more.  Here’s a quick snapshot of our scheduled sessions. We hope to see you in as many of them as you can attend! Monday,

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Interactive documents: An incredibly easy way to use Shiny

June 19, 2014
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Interactive documents: An incredibly easy way to use Shiny

R Markdown’s new interactive documents provide a quick, light-weight way to use Shiny. An interactive document embeds Shiny elements in an R Markdown report. The report becomes “live”, a choose your own adventure that readers can control and explore. Interactive documents are easy to create and easy to share. Create an interactive document To create an interactive document

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R Markdown v2

June 18, 2014
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R Markdown v2

People rarely agree on a best authoring tool or language. Some people cannot live without \LaTeX{} because of the beauty and quality of its PDF output. Some \feel{} \uncomfortable{} \with{} \backslashes{}, and would rather live in another World Word. We have also witnessed the popularity of Markdown, an incredibly simple language (seriously? a LANGUAGE?) that has made reproducible research much easier.

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PITFALL: Did you really mean to use matrix(nrow, ncol)?

June 17, 2014
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PITFALL: Did you really mean to use matrix(nrow, ncol)?

Are you a good R citizen and preallocates your matrices? If you are allocating a numeric matrix in one of the following two ways, then you are doing it the wrong way!x <- matrix(nrow=500, ncol=100)orx <- matrix(NA, nrow=500, ncol=100)Why? Becau...

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useR!2014 Rcpp11 tutorial

June 17, 2014
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We are getting close to useR!2014. I hope I'll see some of you at my tutorial about Rcpp11 in the morning. There are some other pretty useful tutorials as well, so no hard feeling if you don't come, but if you do want to know about modern R and C++, pl...

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