April 2015

Association Rules and Market Basket Analysis with R

April 8, 2015 | David Smith

In today's data-oriented world, just about every retailer has amassed a huge database of purchase transaction. Each transaction consists of a number of products that have been purchased together. A natural question that you could answer from this database is: What products are typically purchased together? This is called Market ... [Read more...]

Mixing Numbers and Symbols in Time Series Charts

April 8, 2015 | Tony Hirst

One of the things I’ve been trying to explore with my #f1datajunkie projects are ways of representing information that work both in a glanceable way as well as repaying deeper reading. I’ve also been looking at various ways of using text labels rather than markers to provide ...
[Read more...]

Discovering Shiny

April 8, 2015 | aschinchon

It is not an experiment if you know it is going to work (Jeff Bezos) From time to time, I discover some of my experiments translated into Shiny Apps, like this one. Some days ago, I discovered one of these translations and I contacted the author, who was a guy ...
[Read more...]

Reader Morghulis

April 7, 2015 | civilstat

TL;DR: Memento mori. After reading too much Seneca, I’m meditating on death like a statistician, by counting how many of GRRM’s readers did not even survive to see the HBO show (much less the end of the book series). Rough … Continue reading → [Read more...]

an email exchange about integral representations

April 7, 2015 | xi'an

I had an interesting email exchange [or rather exchange of emails] with a (German) reader of Introducing Monte Carlo Methods with R in the past days, as he had difficulties with the validation of the accept-reject algorithm via the integral in that it took me several iterations [as shown in ...
[Read more...]

White Matter Segmentation in R

April 7, 2015 | strictlystat

Goals and Overall Approach We will use multiple packages and pieces of software for white matter (and gray matter/cerebro spinal fluid (CSF)) segmentation. The overall approach will be, with the required packages in parentheses: N4 Inhomogeneity Bias-Field Correction (extrantsr and ANTsR) Brain extraction using BET and additional tools (extrantsr ...
[Read more...]

Exploring San Francisco with choroplethrZip

April 7, 2015 | Joseph Rickert

by Ari Lamstein Introduction Today I will walk through an analysis of San Francisco Zip Code Demographics using my new R package choroplethrZip. This package creates choropleth maps of US Zip Codes and connects to the US Census Bureau. A choropleth is a map that shows boundaries of regions (such ... [Read more...]

A Sankey Plot with Uniform Coloured Edges

April 7, 2015 | andrew

Following up on my previous post about generating Sankey plots with the riverplot package. It's also possible to generate plots which have constant coloured edges. Here's how (using some of the data structures from the previous post too): The post A Sankey Plot with Uniform Coloured Edges appeared first on ... [Read more...]

Test Driven Analysis

April 7, 2015 | Markus Gesmann

I mused about Test Driven Analysis on this blog before, but it was Richard Pugh's talk on SAS to R Migration at LondonR last week that brought the topic back into my mind and clarified a few things.Rich's presentation focused on the challenge of how to... [Read more...]

R e WhatsApp

April 6, 2015 | Tiago Dantas

Fiz um WordCloud com as minhas conversas no WhatsApp com a Daiane (minha esposa)​ no início de 2012 e do meio de 2014 até hoje em dia. Mais uma vez fiz tudo utilizando o R e agora os dados do WhatsApp. "Moo" definitivamente caiu em desuso entre nós hehe!Meus ... [Read more...]

Predicting Mobile Phone Prices

April 6, 2015 | inkhorn82

Recently a colleague of mine showed me a nauseating interactive scatterplot that plots mobile phones according to two dimensions of the user’s choice from a list of possible dimensions.  Although the interactive visualization was offensive to my tastes, the JSON … Continue reading →
[Read more...]

SWMPr 2.0.0 now on CRAN

April 5, 2015 | beckmw

I’m pleased to announce that my second R package, SWMPr, has been posted on CRAN. I developed this package to work with water quality time series data from the System Wide Monitoring Program (SWMP) of the National Estuarine Research Reserve System (NERRS). SWMP was established in 1995 to provide continuous ...
[Read more...]

Hierarchical Two Compartimental PK Model

April 5, 2015 | Wingfeet

In this post I am running the Theoph dataset from MEMSS (Data sets and sample analyses from Pinheiro and Bates, "Mixed-effects Models in S and S-PLUS" (Springer, 2000)) in a JAGS model. To quote the MEMSS manual:'Boeckmann, Sheiner and Beal (1994... [Read more...]

Geomorph update 2.1.4 Now Available!

April 4, 2015 | Emma Sherratt

Geomorph users,We have uploaded version 2.1.4 of geomorph to CRAN. The windows and mac binaries have been compiled and the tarball is available*.Small Changes:warpRefMesh() generalised - now takes a mesh3d object (i.e. made from read.ply()) rather... [Read more...]
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