1479 search results for "tutorial"

Pivoting Data in R Excel-style

January 2, 2014
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Pivoting Data in R Excel-style

(This article is referring to an initial proof-of-concept version of r-big-pivot) I have to admit that I very much enjoy pivoting through data using Excel. Its pivoting tool is great for getting a quick insight into a data set’s structure … Continue reading → The post Pivoting Data in R Excel-style appeared first on joy...

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Hadoop for R’s Data scientist

December 29, 2013
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Hadoop for R’s Data scientist

I don’t exactly know where to start. But, after a real pleasant discussion with one of my ex colleague, it seems that there are many thongs around Hadoop ecosystem and R for analyst that should be said by a data scientist, means that, someone who don’t know much more about big data architecture, but who should know the essentials...

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Analyze your Google+ Posts with R [Update]

December 28, 2013
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Analyze your Google+ Posts with R [Update]

Hey everybody, today I show you how you can start working with the Google+ API and R. We create a personal API key, get our own stats and plot them in a nice looking graph. Get the API Key You can get our API key on the Google Developer console here: https://code.google.com/apis/console There you can see …

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Quantitative Finance Applications in R

December 27, 2013
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Quantitative Finance Applications in R

by Daniel Hanson, QA Data Scientist, Revolution Analytics Extracting Financial Data from Internet Source Using R (first in a series) Earlier this month, a colleague and I attended a presentation on Computational Finance in R, given by Guy Yollin of the University of Washington Applied Mathematics faculty, at a meeting of the Seattle useR Group. The first among several...

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The Mascots of Bayesian Statistics

December 25, 2013
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The Mascots of Bayesian Statistics

Why would Bayesian statistics need a mascot/symbol/logo? Well, why not? I don’t know of any other branch of statistics that has a mascot but many programming languages have. R has an “R”, Python has a python snake, and Go has an adorable little gopher. While Bayesian statistics isn’t a programming language it could be characterized as...

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Financial Data Accessible from R – part IV

December 13, 2013
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DataMarket is the latest data source of financial data accessible from R I came across. A good tutorial can be found here. I updated the table and the descriptions below. Source R Package Free Access Available on CRAN Provider url Yahoo, FRED, Oanda, Google Quantmod Yes Yes Quantmod Quandl Quandl Yes Yes Quandl TrueFX TFX

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Geomorph 1.1-5 Now available!

December 13, 2013
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Geomorph users,We have uploaded version 1.1-5 to CRAN. The windows binary has been compiled and the tarball is available. The MAC OSX binary may take a few days (mac users can install the package from source using the tar.gz file). The PDF of helpfiles has not yet been updated - as of 10am CST Dec 13 2013.In...

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Understanding the data analytics project life cycle

December 12, 2013
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Understanding the data analytics project life cycle

While dealing with the data analytics projects, there are some fixed tasks that should be followed to get the expected output. So here we are going to build a data analytics project cycle, which will be a set of standard data-driven processes to lead data to insights effectively. The defined data analytics processes of a The post Understanding...

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Part 3: Random Forests and Model Selection Considerations

December 10, 2013
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Part 3:  Random Forests and Model Selection Considerations

I want to wrap this series up on the breast cancer data set and move on to other topics.  Here I will include the random forest technique and evaluate all three modeling techniques together, including the conditional inference tree and bootstrap a...

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In case you missed it: November 2013 Roundup

December 10, 2013
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In case you missed them, here are some articles from October of particular interest to R users: A recap of the Strata Hadoop World conference, including presentations from Monsanto and eHarmony on their use of R. How to rank and chart the most frequent hashtags of Twitter users with R. A replay of the What’s new in Revolution R...

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