Posts Tagged ‘ r-project ’

Canonical Correlation Analysis for finding patterns in coupled fields

March 25, 2012
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Canonical Correlation Analysis for finding patterns in coupled fields

First CCA pattern of Sea Level Pressure (SLP) and Sea Surface Temperature (SST) monthly anomalies for the region between -180 °W to -70 °W and +30 °N to -30 °S. The following post demonstrates the use of Canonical Correlation Analysis (CCA) for dia...

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Disproportionality Data

March 25, 2012
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Disproportionality Data

So I was hunting around for some data on disproportional electoral outcomes (when the proportion of voters cast for political parties is not close to the proportion of legislative seats that they win).Michael Gallagher keeps an updated version of his L...

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Launching iButton Thermochrons with the help of R

March 23, 2012
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Maxim's iButton Thermochron temperature dataloggers are little silver doo-dads the size of a large watch battery that can record up to 2048 time-stamped temperature values. The internal battery is usually good for a few years of use. Maxim supplies a J...

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Tracking SFO Airport’s Performance Using R, HANA and D3

March 22, 2012
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Tracking SFO Airport’s Performance Using R, HANA and D3

This is my first introduction to D3 and I am simply blown away.  Mike Bostock (@mbostock), you are genius and thanks for creating D3!  With HANA, R, D3, HTML5 and iPad, and you got yourself a KILLER combo!I have been burning my midnight oil o...

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Exponentiation of a matrix (including pseudoinverse)

March 22, 2012
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Exponentiation of a matrix (including pseudoinverse)

The following function "exp.mat" allows for the exponentiation of a matrix (i.e. calculation of a matrix to a given power). The function follows three steps:1) Singular Value Decomposition (SVD) of the matrix2) Exponentiation of the singular ...

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Technical Analysis of Kansas Voter Registration Data

March 21, 2012
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Computer Assisted Reporting This article describes technical analysis of the Kansas voter

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Geocode and reverse geocode your data using, R, JSON and Google Maps’ Geocoding API

March 20, 2012
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Geocode and reverse geocode your data using, R, JSON and Google Maps’ Geocoding API

Geocode and reverse geocode your data using, R, JSON and Google Maps' Geocoding APITo geocode and reverse geocode my data, I use Google's Geocoding service which returns the geocoded data in a JSON. I will recommend that you register with Google Maps A...

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Plotting individual growth charts

March 14, 2012
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Plotting individual growth charts

This R code draws individual growth plots as shown in “Applied Longitudinal Data Analysis: Modeling Change and Event Occurrence” by Judith D. Singer and John B. Willett, an excellent book on multilevel modeling and survival analysis. This c...

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Scales and transformations in ggplot2 0.9.0

March 14, 2012
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Scales and transformations in ggplot2 0.9.0

Some R code designed for ggplot2 0.8.9 is not compatible with ggplot2 0.9.0, and today the ggplot2 web site has outdated documentation which gives this broken example: Dennis Murphy points to the ggplot2 0.9.0 transition guide from where I derived &#82...

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A ridiculous proof of concept: xyz interpolation

March 14, 2012
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A ridiculous proof of concept: xyz interpolation

Ridiculous OrbThis is really the last one on this theme for a while... I had alluded to a combination of methods regarding xyz interpolation at the end of my last post and wanted to demonstrate this in a final example.The ridiculousness that you see ab...

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