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

Compile R and OpenBLAS from Source Guide

July 16, 2014
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Compile R and OpenBLAS from Source Guide

This guide is intended to aid any R and Linux user who desires a threaded version of BLAS. In particular I hope this will allow other grad students, who like me do not have many user privileges on their office computer, to follow suit and exploit multiple cores to speed up their linear algebra computations The post

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The secrets of a linear world exposed

July 15, 2014
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The secrets of a linear world exposed

Like many concepts in mathematics, linearity has multiple interpretations and meanings. What do we mean when we say something is …Continue reading →

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another R new trick [new for me!]

July 15, 2014
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another R new trick [new for me!]

While working with Andrew and a student from Dauphine on importance sampling, we wanted to assess the distribution of the resulting sample via the Kolmogorov-Smirnov measure where F is the target.  This distance (times √n) has an asymptotic distribution that does not depend on n, called the Kolmogorov distribution. After searching for a little while,

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The Zebra Of Riemann

July 13, 2014
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The Zebra Of Riemann

Mathematics is the art of giving the same name to different things (Henri Poincare) Many surveys among experts point that demonstration of the Riemann Hypothesis is the most important pending mathematical issue in this world. This hypothesis is related to Riemann zeta function, which is supossed to be zero only for those complex whose real part is equal to

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R 3.1.1 is released (and how to quickly update it on Windows OS)

July 10, 2014
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R 3.1.1 is released (and how to quickly update it on Windows OS)

R 3.1.1 (codename “Sock it to Me“) was released today! You can get the latest binaries version from here. (or the .tar.gz source code from here). The full list of new features and bug fixes is provided below. Upgrading to R 3.1.1 on Windows If you are using Windows you can easily upgrade to the latest version of R using the

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DSC 2014, Day 2

July 8, 2014
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DSC 2014, Day 2

This will be somewhat shorter summary of the second day of DSC 2014. There was a wider variety of presentations today, but I am only going to discuss those that touched on the main theme of the day, which was … Continue reading →

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Chillin’ at UseR! 2014

July 7, 2014
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Chillin’ at UseR! 2014

This year’s UseR! conference was held at the University of California in Los Angeles. Despite the great weather and a nearby beach, most of the conference was spent in front of projector screens in 18° c (64° f) rooms because there were so many interesting presentations and tutorials going on. I was lucky to present my R package...

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DSC 2014. Day 1

July 7, 2014
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DSC 2014. Day 1

This is a report of the first day of the Directions in Statistical Computing (DSC) conference that took place in Brixen, Italy (See here for an introduction). Performance enhancements were the main theme of the day, covering not just improvements … Continue reading →

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Introduction to R for Life Scientists: Course Materials

July 7, 2014
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Introduction to R for Life Scientists: Course Materials

Last week I taught a three-hour introduction to R workshop for life scientists at UVA's Health Sciences Library.I broke the workshop into three sections:In the first half hour or so I presented slides giving an overview of R and why R is so awesome. Du...

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Four Simple Turtle Graphs To Play With Kids

July 7, 2014
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Four Simple Turtle Graphs To Play With Kids

Technology is just a tool: in terms of getting the kids working together and motivating them, the teacher is the most important (Bill Gates) Some days ago I read this article in R-bloggers and I discovered the TurtleGraphics package. I knew about turtle graphics long time ago and I was thinking of writing a post

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