3580 search results for "GIS"

An Introduction to Statistical Learning with Applications in R

January 6, 2014
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An Introduction to Statistical Learning with Applications in R

Statistical learning theory offers an opportunity to those of us trained as social science methodologists to look at everything we have learned from a different perspective. For example, missing value imputation can be seen as matrix completion and rec...

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R vs Stata: Importing and Saving Datasets

January 6, 2014
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R vs Stata: Importing and Saving Datasets

Today, I got a license of the new Stata/MP 13 (dual core), so I decided to make some succinct comparisons with R (Rstudio). Much more tests will come in the following weeks, but today I focused only on the basics: processing text files. Essentially, reading and writing raw datasets. The results I obtained, surprised me—I've

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PISA scores

January 6, 2014
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PISA scores

The Guardian Newspaper has an interesting article about the Pisa (Program for International Student Assessment) scores for 2012, and it includes data. Since I was interested to see how my own region scored, I downloaded the data into a file called PISA-summary-2012.csv and created a plot summarizing scores in all the sampled regions, with Canada highlighted. Graphical...

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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #18)

January 6, 2014
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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #18)

MCMSki IV is about to start! While further participants may still register (registration is still open!), we are currently 223 registered participants, without accompanying people. I do hope most of these managed to reach the town of Chamonix-Mont-Blanc despite the foul weather on the East Coast. Unfortunately, three speakers (so far) cannot make it: Yugo

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Analyse your bank statements using R

January 4, 2014
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Analyse your bank statements using R

Online banking has made reviewing statements and transferring money more convenient than ever before, but most still rely on external methods for looking at their personal finances. However, many banks will happily give you access to long-term transaction logs, and … Continue reading →

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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #17)

January 3, 2014
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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #17)

We are a few days from the start, here are the latest items of information for the participants: The shuttle transfer on January 5th, from Geneva Airport to Chamonix lasts 1 hour 30 minutes. At your arrival in the airport , follow the “Swiss Exit”. After the customs, the bus driver (handling a sign “MCMC’Ski

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Add ‘Calculation In Process’ Indicator for Shiny Application

January 3, 2014
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A Calculation in process busy indicator for shiny application is useful especially for the application that take long time to calculate result. I used to developed an application do model fitting which need more than 10 seconds! Users may lose their patience if the application doesn’t response after several seconds! One solution is add a process bar,...

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Looping Through Files

Looping Through Files

Today, I finally got inspired to deal with tons of datasets from the Tribunal Superior Eleitoral on the Brazilian elections. The cause of the delay for putting my finger on them was simply to avoid troubles with messy large text files. The set of data I collect consists of above 40GB of pure text files,

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Comparing the #code2013 results with the current TIOBE rankings

January 2, 2014
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Comparing the #code2013 results with the current TIOBE rankings

The TIOBE language rankings have always been controversial but in the absence of more meaningful metrics tends to be viewed as holy writ. Over the last few days of 2013 a hashtag was started by Twitter user @deadprogram called #code2013. The ...

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Quickly Create Dummy Variables in a Data Frame

January 2, 2014
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Quickly Create Dummy Variables in a Data Frame

On Quora, a question was asked about how to fix the error of the randomForest package in R not being able to handle more than 32 levels in a categorical variable. Seeing as how I’ve seen this question asked on Kaggle forums, StackOverflow and elsewhere, here’s the answer: code your own dummy variables instead of Quickly Create...

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