If you want more info about clustering, I have another post about "Clustering analysis and its implementation in R". Here is the link: http://onetipperday.blogspot.com/2012/04/clustering-analysis-2.html------------Several R functions in this...

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If you want more info about clustering, I have another post about "Clustering analysis and its implementation in R". Here is the link: http://onetipperday.blogspot.com/2012/04/clustering-analysis-2.html------------Several R functions in this...

I wrote before about using heatmap tables to combine the strengths of tables and graphics for nominal data. Here is a neat approach using Sweave and latex to produce an effect like in the picture. This latex code is self-contained. Just save it as myfile.Rnw, run Sweave(myfile.Rnw) from inside R and then pdflatex myfile.tex

A while back, while reading chapter 4 of Using R for Introductory Statistics, I fooled around with the mtcars dataset giving mechanical and performance properties of cars from the early 70's. Let's plot this data as a hierarchically clustered heatmap.# scale data to mean=0, sd=1 and convert to matrix mtscaled <- as.matrix(scale(mtcars))# create...

I blogged earlier (http://socialdatablog.com/what-is-wrong-with-this-graph) about the well-known risks of implying a continuous data scale in a graph where there isn't one. I just produced this alternative in the form of a heatmap table, i.e. a heatmap in which the numbers themselves are also shown. Perhaps not quite as intuitive but less misleading. It uses the

Visualisation of Activity in Afghanistan using the Wikileaks data from Mike Dewar on Vimeo.The latest visualization of the WikiLeaks data compiled by our group is an animation of the intensity of report observations in Afghanistan over the six year period in the WikiLeaks data. Team member Mike Dewar did the vast majority of work for