2106 search results for "twitteR"

A small customization of ESS

May 14, 2010
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A small customization of ESS

JD Long (at Cerebral Mastication) posted a question on Twitter about an artifact in ESS, where typing “_” gets you “<-”. This is because in the early days of S+, “_” was an allowed assignment operator, and ESS was developed in that era. Later, it was disallowed in favor of “<-” and “=”, so ESS

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In case you missed it: April Roundup

May 13, 2010
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In case you missed them, here are some articles from last month of particular interest to R users. We announced the availability of Revolution R Community 3.2 (based on R 2.10.1), now 100% open source, and including a new doMC package for parallel computing on Windows. We announced that Revolution R Enterprise is now available free of charge to...

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Reflections on consulting part 5 – what languages and tools to learn?

May 12, 2010
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Reflections on consulting part 5 – what languages and tools to learn?

What languages and tools should you learn as a math/stat consultant?  To jump to the answer: Excel/VBA, SQL, R, Java, and Python. Spreadsheets have many problems with verifiability and scalability, so why Excel? Excel is: Useful for prototyping ideas quickly, either for your own use or to show to other team members Well-known and understood

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What Social Network Analysis software do you use?

May 12, 2010
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What Social Network Analysis software do you use?

See a the poll here by Gabriel Rossman at Code and Culture. I voted for R and ‘igraph’. If you use R you are getting access to all the other wonderful things that come with R. Using specialized package, like Pajek, UCINET etc requires constant going back and forth between network software and some other

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Beware of rogue header files (Bioconductor installation)

May 11, 2010
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Beware of rogue header files (Bioconductor installation)

Just a short note concerning a “gotcha”. As I have many times before, I opened an R console on my newly-upgraded (to lucid 10.04) Ubuntu machine, typed source(“http://bioconductor.org/biocLite.R”) and began a Bioconductor install with biocLite(). Only this time, I saw this: Error in dyn.load(file, DLLpath = DLLpath, ...) : unable to load shared library '/home/sau103/R/i486-pc-linux-gnu-library/2.11/affyio/libs/affyio.so':

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A new site for the R community: inside-R.org

May 6, 2010
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A new site for the R community: inside-R.org

We've just launched a beta/preview of a new website for the R community, inside-R.org. The site is sponsored by Revolution Analytics (who funded its development and maintenance), but it's designed for anyone who uses or has in an interest in the R Project generally. So, you might ask, why another community site for R, when there's already several R...

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Rearranging definitions in R

May 6, 2010
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Rearranging definitions in R

I came up with a handy little trick for programming in R. I like to define a lot of variables all at once without worrying about what order they’re in. The goal would be something like this: K  = -R2/R1 … Continue reading →

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Quick and dirty parallel processing in R

April 30, 2010
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Quick and dirty parallel processing in R

R has some powerful tools for parallel processing, which I discovered while searching for ways to fully utilize my 8-core computer at work. What surprised me is how easy it is…about 6 lines of code, if that. Given that I wasn’t allowed to install heavy duty parallel-processing systems like MPICH on the computer, I found

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Experiments with igraph

April 21, 2010
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Experiments with igraph

Networks – social and biological – are all the rage, just now. Indeed, a recent entry at Duncan’s QOTD described the “hairball” network representation as the dominant cultural icon in molecular biology. I’ve not had occasion to explore networks “professionally”, but have always been fascinated by both networks and the tools used to analyse them.

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R and the Next Big Thing

April 19, 2010
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I've been travelling for the past few days (for the R/Finance 2010 conference in Chicago), so I'd missed much of the reaction to AnnMaria De Mars' article last week where she claimed that "R is an epic fail". Understandably, that inflammatory statement provoked many reactions from the R community on Twitter and in the blogosphere. (I suspect the fact...

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