Monthly Archives: December 2011

A pre-requisite to be a Data Scientist

December 7, 2011
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So what should be in the toolkit of people who call themselves a data scientist?A fundamental skill is the ability to manipulate data. A data scientist should be familiar and comfortable with a number of platforms and scripting tools to get the job don...

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A Spatial Data Analysis GUI for R

December 7, 2011
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I am excited to announce the addition of DeducerSpatial to the Deducer plug-in ecosystem. DeducerSpatial is a graphical user interface for the visualization and analysis of spatial data, built on Deducer's plug-in platform. In a previous post I illustrated how to user DeducerSpatial from the command line to add Open Street Map images to your

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Installing Rcpp on Windows 7 for R and C++ integration

December 7, 2011
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Installing Rcpp on Windows 7 for R and C++ integration

Introduction Romain Francois presented an Rcpp solution on his blog to an old r-wiki optimisation challenge which I had also presented R solutions for previously on my blog. The Rcpp package provides a method for integrating R and C++. This allows for faster execution of an R project by recoding the slower R parts into C+ and thus providing potential performance enhancements.

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New CRAN mirror from Revolution Analytics

December 7, 2011
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There's a new CRAN mirror available: cran.revolutionanalytics.com. It's provided by Revolution Analytics and hosted at Rackspace's high-availability data center in Dallas, TX. Especially for R users located in the western US, using this mirror will provide high-bandwidth access to open-source R downloads and CRAN packages while taking the load off of the main cran.r-project.org server. The mirror is updated...

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A Word Cloud with Spatial Meaning

December 7, 2011
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A Word Cloud with Spatial Meaning

..Some time ago I did a word cloud for representing a Google Scholar search result. Tal Galili pointed me at a post by Drew Conway that expanded on the topic of word clouds lacking spatial meaning. In fact the spatial ordering of words in a word cloud ...

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UseR! 2011 slides are now available

December 7, 2011
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I have just realized that UseR! 2011 presentation slides are now available from the conference web site.Unfortunately, no big surprise this year. Or maybe this is good news as it means that I have all the important stuff in my RSS Reader. And by the way, this blog is now listed on www.r-bloggers.com.To be fair there was...

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Principal Components Analysis with "R" (Part: 001)

December 7, 2011
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Principal Components Analysis with "R" (Part: 001)

This is the first "post" of my new adventure with a software that I consider very interesting and that give to people the oportunity to work with Chemometrics ("R" is free).To follow these examples, yo can download the following article:"Multivariate S...

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R is not C

December 7, 2011
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I keep trying to write R code like it was C code. It is a habit I’m trying to break myself of. For example, the other day I need to construct a model matrix of 1′s and 0′s in the … Continue reading →

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Call for Proposals for The R Series from Chapman & Hall/CRC

December 7, 2011
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(This is a guest post based on Calver, Rob e-mail to the R-help mailing list) We are delighted to announce that our new series of books on R is up and running, with two books already published and another nine forthcoming (including three set to publish in 2012). We are keen to receive proposals for books covering all aspects of...

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Improved Moving Average Code is available for download!

December 7, 2011
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Improved Moving Average Code is available for download!

Quantitative Finance, Technical Trading & Analysis. Fotis Papailias, Dimitrios Thomakos Fotis Quantitative Finance & Technical Trading Improved Moving Average Code is available for download!Hi everyone, in the last few days we have received great feedback from you. Due to increasing demand we have made a short version of the original code available for personal use. Please let us...

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