4780 search results for "git"

24 Days of R: Day 1

December 1, 2013
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24 Days of R: Day 1

Last year, the good people at is.R() spent December publishing an R advent calendar. This meant that for 24 days, every day, there was an interesting post featuring analysis and some excellent visualizations in R. I think it's an interesting (if very challenging) exercise and I'm going to try to do it myself this year.

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R: Explore ARIMA(2, 2, 2) subclass family on Shiny

December 1, 2013
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R: Explore ARIMA(2, 2, 2) subclass family on Shiny

I've been thinking that it might be better to explore the Box-Jenkins ARIMA (Autoregressive Integrated Moving-Average) three-iterative modelling on Shiny. So here is what I got, this app is intended for ARIMA(2, 2, 2) subclass family only.The app has s...

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Analyzing the DVI Indicator

November 30, 2013
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Analyzing the DVI Indicator

The DVI indicator is a well-known indicator, created by David Varadi from CSS Analytics. It was introduced in 2009 as a good predictor for the S&P 500 over the past 30 years. Its performance on the S&P 500 has been studied in the blogosphere comprehensively. None of these studies, however, contained everything I was looking

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R Syntax for Ranked Choice Voting

November 30, 2013
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I have gotten several requests for the R syntax I used to analyze the ranked-choice voting data and create the animated GIF. Rather than just posting the syntax, I thought I might write a detailed post describing the process. Reading … Continue reading →

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Logistic Regression with R: step by step implementation part-1

November 30, 2013
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Logistic Regression with R: step by step implementation part-1

Very warm welcome to first part of my series blog posts. In previous blog post, we discussed about concept of the linear regression and its mathematical model representation.  We also tried to implement linear regression in R step by step. In this post I will discuss about the logistic regression  and how to implement the The post Logistic...

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The attendants of useR! 2013 around the world

November 30, 2013
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The attendants of useR! 2013 around the world

Alex and I had a great time in Albacete this summer, where the annual useR! conference took place. Of course we were really interested in the exciting news on R development, new packages and other related topics that we hoped to hear about there, and we also wanted to present what we have created with our R packages...

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RcppCNPy 0.2.2

November 30, 2013
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Right on the heels of release 0.2.1 of RcppCNPy, a new version 0.2.2 is now on CRAN. RcppCNPy uses the CNPY library by Carl Rogers to provide R with easy read and write access to NumPy files. The reason for the new version that I had experimented ...

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Introducing CrimeMap – A Web App Powered by ShinyApps!

November 29, 2013
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Introducing CrimeMap – A Web App Powered by ShinyApps!

A few months ago I did a mini project using open crime data and R to create crime visualisations. At that time, I was already thinking about a web app using Shiny but I couldn't justify the time to develop the app and then set up a server etc. Not unti...

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Happy Thanksgiving from Revolution Analytics

November 28, 2013
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> require(devtools) > install_github("cowsay","SChamberlain") > require(cowsay) > say("Happy Thanksgiving!",by="chicken") ----- Happy Thanksgiving! ------ \ \ _ _/ } `>' \ `| \ | /'-. .-. \' ';`--' .' \'. `'-./ '.`-..-;` `;-..' _| _| /` /` (With thanks for Scott Chamberlain for the cowsay package.) For those in the US and everyone who celebrates, Happy Thanksgiving from the team...

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Computing and visualizing PCA in R

November 28, 2013
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Computing and visualizing PCA in R

Following my introduction to PCA, I will demonstrate how to apply and visualize PCA in R. There are many packages and functions that can apply PCA in R. In this post I will use the function prcomp from the stats package. I will also show how to visualize PCA in R using Base R graphics.

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