1063 search results for "RStudio"

Joint Models for Longitudinal and Survival Data

September 25, 2014
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Joint Models for Longitudinal and Survival Data

What are joint models for longitudinal and survival data? In this post we will introduce in layman's terms the framework of joint models for longitudinal and time-to-event data. These models are applied in settings where the sample units are followed-up in time, for example, we may be interest in patients suffering...

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Seeing the (day)light with R

September 23, 2014
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Seeing the (day)light with R

The arrival of the autumnal equinox foreshadows the reality of longer nights and shorter days here in the northeast US. We can both see that reality and distract ourselves from it at the same time by firing up RStudio (or your favorite editor) and taking a look at the sunrise & sunset times based on

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How to publish R and ggplot2 to the web

September 23, 2014
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How to publish R and ggplot2 to the web

by Matt Sundquist, Plotly Co-founder It's delightfully smooth to publish R code, plots, and presentations to the web. For example: Shiny makes interactive apps from R. Pretty R highlights R code for HTML. Slidify makes slides from R Markdown. Knitr and RPubs let you publish R Markdown docs. GitHub and devtools let you quickly release packages and collaborate. Now,...

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Hands-on dplyr tutorial for faster data manipulation in R

September 23, 2014
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2014-09-23 18_21_48-Clipboard

I love dplyr. It's my "go-to" package in R for data exploration, data manipulation, and feature engineering. I use dplyr because it saves me time: its performance is blazing fast on data frames, but even more importantly, I can write dplyr code faster ...

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testthat 0.9

September 23, 2014
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testthat 0.9

testthat 0.9 is now available on CRAN. Testthat makes it easy to turn the informal testing that you’re already doing into formal automated tests. Learn more at http://r-pkgs.had.co.nz/tests.html This version of testthat has four important new features that bring testthat up to speed with unit testing frameworks in other languages: You can skip() tests with

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“Do You Want to Steal a Snowman?” – A Look (with R) At TorrentFreak’s Top 10 PiRated Movies List #TLAPD

September 18, 2014
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“Do You Want to Steal a Snowman?” – A Look (with R) At TorrentFreak’s Top 10 PiRated Movies List #TLAPD

We leave the Jolly Roger behind this year and turn our piRate spyglass towards the digital seas and take a look at piRated movies as seen through the lens of TorrentFreak. The seasoned seadogs who pilot that ship have been doing a weekly “Top 10 Pirated Movies of the Week” post since early 2013, and...

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The Traveling Salesman with Simulated Annealing, R, and Shiny

September 17, 2014
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The Traveling Salesman with Simulated Annealing, R, and Shiny

I built an interactive Shiny application that uses simulated annealing to solve the famous traveling salesman problem. You can play around with it to create and solve your own tours at the bottom of this post. Here's an animation of the annealing process finding the shortest path through the 48 state capitals of the contiguous...

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How do you say π^π^π?

September 15, 2014
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How do you say π^π^π?

Well, not that you really probably want to know how to say such an absurdly large number. However for those of you who are interested (allowing for rounding) it is:one quintillion, three hundred forty quadrillion, one hundred sixty-four trillion, one h...

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Embedding RData files in Rmarkdown files for more reproducible analyses

September 12, 2014
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For those of us interested in reproducible analysis, Rmarkdown is a great way of communicating our code to other researchers. Rstudio, in particular, makes it very easy to create attractive HTML document containing text, code, and figures, which can then be sent to colleagues or put on the internet for anyone to see. If you aren't using...

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LA R Meetup Summary: Highlights from the useR! 2014 Conference

September 10, 2014
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LA R Meetup Summary: Highlights from the useR! 2014 Conference

Last week the LA R meetup featured 5 speakers each highlighting a few things they...

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