1459 search results for "how to import image file to r"

RStudio and GitHub

July 13, 2015
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RStudio and GitHub

Version control has become essential for me keeping track of projects, as well as collaborating. It allows backup of scripts and easy collaboration on complex projects. RStudio works really well with Git, an open source open source distributed version control system, and GitHub, a web-based Git repository hosting service. I was always forget how to

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“Just the text ma’am” – Web Site Content Extraction with XSLT & R

July 9, 2015
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Sometimes you just need the salient text from a web site, often as a first step towards natural language processing (NLP) or classification. There are many ways to achieve this, but XSLT (eXtensible Stylesheet Language) was purpose-built for slicing, dicing and transforming XML (and, hence, HTML) so, it can make more sense and even be speedier use XSLT...

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The network structure of CRAN

July 8, 2015
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The network structure of CRAN

by Andrie de Vries My experience of UseR!2015 drew to an end shortly after I gave a Kaleidoscope presentation discussing "The Network Structure of CRAN". My talk drew heavily on two previous blog posts, Finding the essential R packages using the pagerank algorithm and Finding clusters of CRAN packages using igraph. However, in this talk I went further, attempting...

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Time series outlier detection (a simple R function)

July 8, 2015
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Time series outlier detection (a simple R function)

(By Andrea Venturini) Imagine you have a lot of time series – they may be short ones – related to a lot of different measures and very little time to find outliers. You need something not too sophisticated to solve quickly the mess. This is – very shortly speaking – the typical situation in which you can adopt washer.AV()...

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Teaching a short topic to beginner R users

Teaching a short topic to beginner R users

A couple weeks ago I was given the opportunity to teach a 1 hr 30 min slot of an introduction to R course. In the past, I've taught lectures for similar courses, and I ended up asking myself what would be the best short topic to teach and how to teach ...

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Hygge at UseR! 2015, Aalborg

July 6, 2015
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Hygge at UseR! 2015, Aalborg

hygge A Danish word (pronounced HU-guh) meaning social coziness. I.e. the feeling of a good social atmosphere. – Urban Dictionary Yes, there was plenty of hygge to go around this year’s UseR! that took place last week in Aalborg, Denmark. Everybody I’ve spoken with agrees that it was an extraordinary conference, from the interesting speakers and presentations...

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Introducing cricketr! : An R package to analyze performances of cricketers

July 4, 2015
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Introducing cricketr! : An R package to analyze performances of cricketers

Yet all experience is an arch wherethro’ Gleams that untravell’d world whose margin fades For ever and forever when I move. How dull it is to pause, to make an end, To rust unburnish’d, not to shine in use! Ulysses by Alfred Tennyson Introduction This is an initial post in which I introduce a cricketing

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From cats to zombies, Wednesday at useR2015

July 1, 2015
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From cats to zombies, Wednesday at useR2015

The morning opened with someone who I was too bleary eyed to work out who it was. Possibly the dean of the University of Aalborg. Anyway, he said that this is the largest ever useR conference, and the first ever in a Nordic country. Take that, Norway! Also, considering that there are now quite a

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DotCity: a game written in R? and other statistical computer games?

June 28, 2015
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DotCity: a game written in R? and other statistical computer games?

A while back I recommended Nathan Uyttendaele’s beginner’s guide to speeding up R code. I’ve just heard about Nathan’s computer game project, DotCity. It sounds like a statistician’s minimalist take on SimCity, with a special focus on demographic shifts in … Continue reading →

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The Workflow of Infinite Shame, and other stories from the R Summit

June 27, 2015
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The Workflow of Infinite Shame, and other stories from the R Summit

At day one of the R Summit at Copenhagen Business School there was a lot of talk about the performance of R, and alternate R interpreters. Luke Tierney of the University of Iowa, the author of the compiler package, and R-Core member who has been working on R’s performance since, well, pretty much since R

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