1830 search results for "ggplot2"

An R programmer looks at Julia

April 7, 2012
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In January of this year I first saw mention of the Julia language in the release notes for LLVM. I mentioned this to Dirk Eddelbuettel and later we got in contact with Viral Shahregarding a Debian package for Julia. There are many aspects of Julia tha...

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Simulated Annealing in Julia

April 4, 2012
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Simulated Annealing in Julia

Building Optimization Functions for Julia In hopes of adding enough statistical functionality to Julia to make it usable for my day-to-day modeling projects, I’ve written a very basic implementation of the simulated annealing (SA) algorithm, which I’ve placed in the same JuliaVsR GitHub repository that I used for the code for my previous post about

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Enjoy Low Income Tax Rates

April 4, 2012
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Enjoy Low Income Tax Rates

Tax rates were higher in the past... Joe derisively snorted at the pay stub in his hand. Crumpling it into a ball, he wound up like a baseball pitcher and fast-balled the wad of paper across the room. It bounced unsatisfyi...

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How R Searches and Finds Stuff

April 4, 2012
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How R Searches and Finds Stuff

Or… How to push oneself down the rabbit hole of environments, namespaces, exports, imports, frames, enclosures, parents, and function evaluation? Motivation There are a few reasons to bother reading this post: Rabbit hole avoida...

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Review: Kölner R Meeting 30 March 2012

April 4, 2012
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Review: Kölner R Meeting 30 March 2012

The first Kölner R user meeting was great fun. About 20 useRs had turned up to exchange their ideas, questions and experience with R. Three talks about R & Excel, ggplot2 & XeLaTeX and Dynamical systems with R & simecol had kicked off the evening, wit...

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CLIWOC (British, Spanish and Dutch shipping 1750-1855): Getting the data into R

April 3, 2012
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on the Spatial analysis blog a nice visualisation of the major shipping route of the British, Dutch and Spanish fleet in 1750-1850 was presented recently. based on the Climatological Databases for the World's Oceans (CLIWOC). another even nicer visuali...

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Web-Scraping in R

April 2, 2012
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Web-Scraping in R

Web-scraping, or web-crawling, sounds like a seedy activity worthy of an Interpol investigative department. The reality, however, is far less nefarious. Web-scraping is any procedure by which someone extracts data from the internet. Given that it’s possible to get the internet on computers these days; web-scrapping opens an array of interesting possibilities to social-science researchers

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Linking apples liking to analytical data

April 2, 2012
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Linking apples liking to analytical data

This post describes the last puzzle piece of the model. The link of instrumental to sensory data. Together with the previous pieces this leads to a model starting from physico-chemical measurements, to sensory data, to consumers' perception and finally...

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Mapped: British, Spanish and Dutch Shipping 1750-1800

March 30, 2012
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Mapped: British, Spanish and Dutch Shipping 1750-1800

I recently stumbled upon a fascinating dataset which co

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Bootstrap example

March 30, 2012
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Bootstrap example

Bootstrap your way into robust inference. Wow, that was fun to write.. Introduction Say you made a simple regression, now you have your . You wish to know if it is significantly different from (say) zero. In general, people look … Continue reading →

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