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• Longitudinal analysis: autocorrelation makes a difference

  Back to posting after a long weekend and more than enough rugby coverage to last a few years. Anyway, back…
  26 Oct, '11

• Teaching with R: the switch

  There are several blog posts, websites (and even books) explaining the transition from using another statistical system (e.g. SAS, SPSS,…
  22 Oct, '11

• Spatial correlation in designed experiments

  Last Wednesday I had a meeting with the folks of the New Zealand Drylands Forest Initiative in Blenheim. In addition…
  21 Oct, '11

• On R, bloggers, politics, sex, alcohol and rock & roll

  Yesterday morning at 7 am I was outside walking the dog before getting a taxi to go to the airport…
  20 Oct, '11

• Large applications of linear mixed models

  In a previous post I summarily described our options for (generalized to varying degrees) linear mixed models from a frequentist…
  19 Oct, '11

• Lattice when modeling, ggplot when publishing

  When working in research projects I tend to fit several, sometimes quite a few, alternative models. This model fitting is…
  18 Oct, '11

• Linear mixed models in R

  A substantial part of my job has little to do with statistics; nevertheless, a large proportion of the statistical side…
  17 Oct, '11

• Maximum likelihood

  This post is one of those ‘explain to myself how things work’ documents, which are not necessarily completely correct but…
  14 Oct, '11

• Simulating data following a given covariance structure

  Every year there is at least a couple of occasions when I have to simulate multivariate data that follow a…
  13 Oct, '11

• Setting plots side by side

  This is simple example code to display side-by-side lattice plots or ggplot2 plots, using the mtcars dataset that comes with…
  12 Oct, '11