Blog Archives

Google Analytics + R = FUN!

May 5, 2013
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Google Analytics + R = FUN!

The scope of this post it to show how simple it is to get data out of the Google Analytics and create your own reports (that you hope that they can be semi-automated at least) and you favourite statistical graphs (those that GA is currently missing). As you already know R is a favourite tool ...read more

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Download your Facebook photos using R

September 15, 2012
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Download your Facebook photos using R

So tonight I wanted to download all my Facebook pictures. For some reason the zip file was corrupted each of the 3 times I downloaded, so I remembered that some time ago I was playing around with an R project named Facebook Data-Mining. The project is conveniently located at github and you can access it here. Looking ...read more

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A tiny RCurl headache ;)

July 4, 2012
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As more and more data go online (plus we love Google Drive) we are forced to connect to our data over the net. We mostly do this via RCurl (but we could do this using RGoogleDocs as well).In that case all that is required to get the data into R is the two lines of ...read more

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lme4 stands 4 Linear mixed-effects…

February 19, 2010
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lme4 stands 4 Linear mixed-effects…

There is a certain hype about mixed (and random) effects among statistician and analysts. You can show some love to Douglas Bates and Martin Maechler for maintaing the lme4 package for our cupid, R I copy the entity of the information of the projects page. Doxygen documentation of the underlying C functions is here. The

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[Event] R / Finance 2010: Applied Finance with R

February 5, 2010
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[Event] R / Finance 2010: Applied Finance with R

One of the greatest event on R is under way… R / Finance 2010: Applied Finance with R April 16 & 17, Chicago, IL, US The second annual R / Finance conference for applied finance using R, the premier free software system for statistical computation and graphics, will be held this spring in Chicago, IL, USA on Friday April 16

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Start your engines; it’s a Linux era!

December 29, 2009
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Start your engines; it’s a Linux era!

Well, I’m writing this from my new system. After years on hiatus I migrated to Linux, once again. Setting up a full system on Linux for a Greek user had been one of the greatest challenges. First,of all setting up writing, reading & printing in Greek was the biggest obstacle, I still recall memories of 2000/2001

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R> if (done=TRUE) tweet me!

December 11, 2009
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R> if (done=TRUE) tweet me!

Let’s say that you’re fitting a cumbersome model so time is not to waste over a PC staring at the screen half anxious-half bored… Then, you can always leave and go on with meetings and all your daily routine and have R notify you the results! How? We will illustrate the situation above using some Bayesian Model

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Create factor variables in R

December 6, 2009
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Create factor variables in R

Instead of the factor() function which usually applies after defining a vector there’s the gl() base function to do this in one step, eg freq <- c(204,6,1,211,13,5,357,44,38,92,34,49) row <- gl(4,3,length=12) col <- gl(3,1,length=12) > col 1 2 3 1 2 3 1 2 3 1 2 3 Levels: 1 2 3 tt <- data.frame(freq,row,col) > xtabs(tt) col row   1   2   3 1 204   6  

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R twitts…

December 5, 2009
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R twitts…

You may already know this… #rstats I think I might get an account when get to connect to the Internet in my mobile phone

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[S. Lynch] Introduction to Applied Bayesian Statistics and Estimation for Social Scientists

December 4, 2009
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[S. Lynch] Introduction to Applied Bayesian Statistics and Estimation for Social Scientists

Well, that’s a good book that you shouldn’t miss “Introduction to Applied Bayesian Statistics and Estimation for Social Scientists”. Why you shouldn’t miss it? Coz, it’s practical and I mean p r a c t i c a l big time!!! I don’t own tons of (traditionally) printed books but that’s one of the few breaking

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