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

R Scrabble: Part 2

June 25, 2014
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R Scrabble: Part 2

Ivan Nazarov and Bartek Chroł gave very interesting comments to my last post on counting number of subwords in NGSL words. In particular they proposed large speedups of my code. So I thought to try checking a larger data set. So today I will work with TWL2006 - the official word authority for tournament Scrabble...

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Cleaning up oversized github repositories for R and beyond

June 25, 2014
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Cleaning up oversized github repositories for R and beyond

The version control system Git is an amazing piece of software for tracking every change that you make to a project and saving its entire history. It is incredibly useful, for users of R and other programming languages, leading it shoot from 0 market share in 2005 (when it was first released) to market domination in one short decade. However, Git can cause confusion....

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R function call overhead in Rcpp(11)

June 24, 2014
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R function call overhead in Rcpp(11)

Some people have asked for some facts about the differences between Rcpp11 and Rcpp, here is just one nugget. If you've been following the Rcpp world for some time, you might have seen comments like: Calling an R function from C++ is expensive. ...

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Introducing ggvis

June 23, 2014
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Introducing ggvis

Our first public release of ggvis, version 0.3, is now available on CRAN. What is ggvis? It’s a new package for data visualization. Like ggplot2, it is built on concepts from the grammar of graphics, but it also adds interactivity, a new data pipeline, and it renders in a web browser. Our goal is to

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Deploying a scoring engine for predictive analytics with OpenCPU

June 23, 2014
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Deploying a scoring engine for predictive analytics with OpenCPU

TLDR/abstract: See the tvscore demo app or this jsfiddle for all of this in action. This post explains how to use the OpenCPU system to setup a scoring engine for calculating real time predictions. In our example we use the predict.gam function from the mgcv package to make predictions based...

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PCA and K-means Clustering of Delta Aircraft

June 22, 2014
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PCA and K-means Clustering of Delta Aircraft

nIntroductionnI work in consulting. If you're a consultant at a certain type of company, agency, organization, consultancy, whatever, this can sometimes mean travelling a lot.nnMany business travellers 'in the know' have heard the old joke that if you want to stay at any type of hotel anywhere in the world and get a great rate, all you have to...

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Free Geometric Mophometrics – a Summary

June 18, 2014
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I have seen a few questions floating around the interwebs recently from people starting up in morphometrics and wondering what is the best software to use. I am inspired by my fellow 3D expert Dr. Peter Falkingham's blog post on free sof...

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Upcoming R Training Course in Boston

June 18, 2014
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Upcoming R Training Course in Boston

R for Software Developers and Data Analysts Saturday June 28, 2014 9:00am-4:00pm Microsoft NERD, Cambridge, MA I’ll be presenting a one day professional development workshop on R programming for software developers and data scientists, sponsored by the Greater Boston Chapter of … Continue reading →

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RGolf: NGSL Scrabble

June 14, 2014
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RGolf: NGSL Scrabble

It is last part of RGolf before summer. As R excels in visualization capabilities today the task will be to generate a plot.We will work with NGSL data - a list of 2801 important vocabulary words for students of English as a second ...

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Identifying Pathways in the Consumer Decision Journey: Nonnegative Matrix Factorization

June 13, 2014
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Identifying Pathways in the Consumer Decision Journey: Nonnegative Matrix Factorization

The Internet has freed us from the shackles of the yellow page directory, the trip to the nearby store to learn what is available, and the forced choice among a limited set of alternatives. The consumer is in control of their purchase journey and can t...

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