902 search results for "how to import image file to R"

How to Import MS Excel Data into R

September 26, 2009
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How to Import MS Excel Data into R

s Sir Francis Bacon said, “Histories make men wise; poets witty; the mathematics subtile; natural philosophy deep; moral grave; logic and rhetoric able to contend.” And Windows stupid. He should have added the last sentence if he were a Windows user in this age. 1. Avoid Using M$ Excel A lot of R users often ask this question:

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A look at the igraph package

November 13, 2014
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A look at the igraph package

by Joseph Rickert The igraph package has become a fundamental tool for the study of graphs and their properties, the manipulation and visualization of graphs and the statistical analysis of networks. To get an idea of just how firmly igraph has become embedded into the R package ecosystem consider that currently igraph lists 72 reverse depends, 59 reverse imports...

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Announcing the Publication of R Machine Learning Essentials

November 10, 2014
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Announcing the Publication of R Machine Learning Essentials

R machine learning essentials will be published soon. T

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Visualising stranded RNA-seq data with Gviz/Bioconductor

November 6, 2014
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Visualising stranded RNA-seq data with Gviz/Bioconductor

Gviz is a really great package for visualising genomics data in R. Recently I have been looking at stranded RNA-seq data, which provides the ability to differentiate sense and antisense expression from a genomic locus thanks to the way in … Continue reading →

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High performance JSON streaming in R: Part 1

November 5, 2014
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High performance JSON streaming in R: Part 1

The jsonlite stream_in and stream_out functions implement line-by-line processing of JSON data over a connection, such as a socket, url, file or pipe. Thereby we can construct a data processing pipeline that can handle large (or unlimited) amounts of data with limited memory. This post will walk through some examples...

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Analyzing coverage of R unit tests in packages – the {testCoverage} package

November 4, 2014
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Analyzing coverage of R unit tests in packages – the {testCoverage} package

(guest post by Andy Nicholls and the team of Mango Business Solutions) Introduction Testing is a crucial component in ensuring that the correct analyses are deployed. However it is often considered unglamorous; a poor relation in terms of the time and resources allocated to it in the process of developing a package. But with the

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Creating More Effective Graphs

November 4, 2014
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Creating More Effective Graphs

A few years ago I ordered a copy of the 2005 edition of Creating More Effective Graphs by Naomi Robbins. Somewhat shamefully I admit that the book got buried beneath a deluge of papers and other books and never received the attention it was due. Having recently discovered the R Graph Catalog, which implements many

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Let’s Do Some MORE Hierarchical Bayes Choice Modeling in R!

November 3, 2014
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Let’s Do Some MORE Hierarchical Bayes Choice Modeling in R!

R enables us to "test drive" statistical models by running simulations and analyzing actual data. We can look at the output and get some sense of how the whole thing works. The goal is to provide a realistic application that is not too difficult to fol...

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R 3.1.2 release (and upgrading for Windows users)

November 3, 2014
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R 3.1.2 release (and upgrading for Windows users)

R 3.1.2 (codename “Pumpkin Helmet“) was released last week. 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 3.1.2 on Windows If you are using Windows you can easily upgrade to the latest version of R using the installr

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Leveraging R for Job Openings for Economists

November 1, 2014
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Leveraging R for Job Openings for Economists

Quite a few people emailed me regarding my post on Econ Job Market. This post is about how you can use very basic and simple R tools to help you in sorting through the Job Openings for Economists list from the American Economic Association.This definitely helped me in developing my spreadsheet of places to apply

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