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

Comparing Student outcomes with Research Output (using R and ggplot2′s text labels)

May 22, 2011
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Comparing Student outcomes with Research Output (using R and ggplot2′s text labels)

In this post, I take a look at some league table data recently published by the Guardian. I also provide …Continue reading »

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Porting Stata-like Marginal Effects to LaTeX

May 19, 2011
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Porting Stata-like Marginal Effects to LaTeX

The TimeSeriesIreland Blog posted an excellent start on a function that automatically computes marginal effects for probit and logit models. As I have always wanted an easy-to-use function that computes and reports marginal effects in R, I was elated ...

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Porting Stata-like Marginal Effects to LaTeX

May 19, 2011
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Porting Stata-like Marginal Effects to LaTeX

The TimeSeriesIreland Blog posted an excellent start on a function that automatically computes marginal effects for probit and logit models. As I have always wanted an easy-to-use function that computes and reports marginal effects in R, I was elated ...

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RStudio the missing link between your brain and statistics

May 18, 2011
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RStudio the missing link between your brain and statistics

RStudio is a graphical user interface for R. Or as the developers put it. RStudio™ is a new integrated development environment (IDE) for R. RStudio combines an intuitive user interface with powerful coding tools to help you get the most out of R.   While there have been a few projects (e.g. RCommander, RkWard, JaguaR)

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TreeBASE in R: a first tutorial

May 16, 2011
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TreeBASE in R: a first tutorial

My TreeBASE R package is essentially functional now.  Here’s a quick tutorial on the kinds of things it can do.  Grab the treebase package here, install and load the library into R. TreeBASE provides two APIs to query the database, one which searches by the metadata associated with different publications (called OAI-PMH), and another which

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A survey of [the 60's] Monte Carlo methods

May 16, 2011
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A survey of [the 60's] Monte Carlo methods

“The only good Monte Carlos are the dead Monte Carlos” (Trotter and Tukey, quoted by Halton) When I presented my history of MCM methods in Bristol two months ago, at the Julian Besag memorial, Christophe Andrieu mentioned a 1970 SIAM survey by John Halton on A retrospective and prospective survey of the Monte Carlo

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sab-R-metrics: Basics of LOESS Regression

May 11, 2011
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sab-R-metrics: Basics of LOESS Regression

Last week, I left you off at logistic regression. This week, I'll be pushing the limits of regression analysis a bit more with a smoothing technique called LOESS regression. There are a number of smoothing methods that can be used, such as Smoothing ...

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sab-R-metrics: Basics of LOESS Regression

May 11, 2011
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sab-R-metrics: Basics of LOESS Regression

Last week, I left you off at logistic regression. This week, I'll be pushing the limits of regression analysis a bit more with a smoothing technique called LOESS regression. There are a number of smoothing methods that can be used, such as Smoothing ...

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EC2 Trials and Tribulations, Part 1 (Web Crawling)

May 11, 2011
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EC2 Trials and Tribulations, Part 1 (Web Crawling)

Elastic Compute Cloud (EC2) is a service provided a Amazon Web Services that allows users to leverage computing power without the need to build and maintain servers, or spend money on special hardware. The idea is simple, the user “boots” up one or more machines and then accesses those machines as if they were logged into any other machine...

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What value is cross country GDP correlation? [Part One]

May 6, 2011
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What value is cross country GDP correlation? [Part One]

The above graph borders on chartjunk (and is nothing like Paul Butler’s amazing Facebook map). We can see some variation in color but mostly it is a set of lines between 152 country capitals with no means to determine which … Continue reading →

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