2145 search results for "twitteR"

New versions for ggplot2 (0.8.8) and plyr (1.0) were released today

July 6, 2010
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New versions for ggplot2 (0.8.8) and plyr (1.0) were released today

As prolific as the CRAN website is of packages, there are several packages to R that succeeds in standing out for their wide spread use (and quality), Hadley Wickhams ggplot2 and plyr are two such packages. And today (through twitter) Hadley has updates the rest of us with the news: just released new versions of plyr and ggplot2. source...

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Get up and running with R, Sweave, and LaTex

July 2, 2010
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Get up and running with R, Sweave, and LaTex

There are a lot of great references on the web on how to levarage LaTeX for reporting and presentations (beamer), but as someone who is completely new to R and reproducible research, I was having a pretty hard time figuring out simply what to do (what tools, where do you edit, etc.). Eclipse as a

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An experiment in A/B Testing my Résumé

July 1, 2010
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An experiment in A/B Testing my Résumé

Objective I’ll admit it: my résumé doesn’t stand out. I’ve had some great internships, but also a tendency to work for companies that aren’t (yet!) household names. And though I’m doing fine academically, it’s not well enough to stand out … Continue reading →

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My Experience at Hadoop Summit 2010 #hadoopsummit

June 30, 2010
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My Experience at Hadoop Summit 2010 #hadoopsummit

This week I had the opportunity the trek up north to Silicon Valley to attend Yahoo’s Hadoop Summit 2010. I love Silicon Valley. The few times I’ve been there the weather was perfect (often warmer than LA), little to no traffic, no road rage and people overall seem friendly and happy. Not to mention there are so many trees...

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Plot Multiple Time Series using the flow / inkblot / river / ribbon / volcano / hourglass / area / whatchamacallit plots ~ blue whale catch per country w/ ggplot2

June 27, 2010
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Plot Multiple Time Series using the flow / inkblot / river / ribbon / volcano / hourglass / area / whatchamacallit plots ~ blue whale catch per country w/ ggplot2

Ever since I first looked at this NYT visualization by Amanda Cox, I’ve always wanted to reproduce this in R. This is a plot that stacks multiple time series onto one another, with the width of the river/ribbon/hourglass representing the strength at each time. The NYT article used box office revenue as the width of

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Another harmonic mean approximation

June 26, 2010
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Another harmonic mean approximation

Martin Weinberg posted on arXiv a revision of his paper, Computing the Bayesian Factor from a Markov chain Monte Carlo Simulation of the Posterior Distribution, that is submitted to Bayesian Analysis. I have already mentioned this paper in a previous post, but I remain unconvinced of the appeal of the paper method, given that it

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Read Compressed Zip Files in R

June 25, 2010
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Read Compressed Zip Files in R

One of the great things that I am learning about R is that it is really powerful as a data management tool.  I just found how to unzip files.  I could use Python for this in SPSS, but it just feels like it is more natural to do in R.  Of course, you have to

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New blog from Rmetrics Foundation

June 21, 2010
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The Rmetrics Foundation (the sharp minds behind the Rmetrics suite of packages for financial analysis in R) have just launched a new blog where you can keep up with the latest Rmetrics news. Amongst the recent news: a ne eBook about data management of Indian financial market data, and a new interface between Rmetrics and AMPL. You can also...

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Do Not Log-Transform Count Data, Bitches!

June 17, 2010
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Do Not Log-Transform Count Data, Bitches!

OK, so, the title of this article is actually Do not log-transform count data, but, as @ascidacea mentioned, you just can’t resist adding the “bitches” to the end. Onwards. If you’re like me, when you learned experimental stats, you were taught to worship at the throne of the Normal Distribution. Always check your data and

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Conferenza a Padova

June 16, 2010
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Conferenza a Padova

Today and tomorrow, I am attending the annual Italian statistical society meeting. While I appreciate very much the invitation, as well as the opportunity to walk through  Padova and Venezia for a short (and alas rainy!) hour on the way there (leaving home at 8am, walking in Venezia at noon!), I am rather skeptical of

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