457 search results for "knitr"

useR! 2014 is underway with 16 tutorials

June 30, 2014
By

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...

Read more »

A Simple Shiny App for Monitoring Trading Strategies

June 25, 2014
By
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.

Read more »

Come see RStudio at UseR! 2014

June 24, 2014
By
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,

Read more »

Interactive documents: An incredibly easy way to use Shiny

June 19, 2014
By
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

Read more »

R Markdown v2

June 18, 2014
By
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.

Read more »

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

June 17, 2014
By
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...

Read more »

useR!2014 Rcpp11 tutorial

June 17, 2014
By

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...

Read more »

Playing with GUIs in R with RGtk2

June 16, 2014
By
Playing with GUIs in R with RGtk2

Sometimes when we create some nice functions which we want to show other people who don’t know R we can do two things. We can teach them R what is not easy task which also takes time or we can…Read more ›

Read more »

Text mining in R – Automatic categorization of Wikipedia articles

June 16, 2014
By
Text mining in R – Automatic categorization of Wikipedia articles

Text mining is currently a live issue in data analysis. Enoromus text data resourses on the Internet made it an important component of Big Data world. The potential of information hidden in the words is the reason why I find…Read more ›

Read more »

Reproducible research is still a challenge

June 9, 2014
By

Science is reportedly in the middle of a reproducibility crisis. Reproducibility seems laudable and is frequently called for (e.g., nature and science). In general the argument is that research that can be independently reproduced is more reliable than research that cannot be independently reproduced. It is also worth noting that reproducing research is...

Read more »