Michael Friendly
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View article: The radiant diagrams of Florence Nightingale
The radiant diagrams of Florence Nightingale Open
This article is a tribute to the contributions of Florence Nightingale to statistics and statistical graphics on her bicentennial. We start with her most famous "rose" diagram and describe how she came to this graphic, designed to influenc…
View article: Galton's Gleam Visual Thinking and Graphic Discoveries
Galton's Gleam Visual Thinking and Graphic Discoveries Open
Michael Friendly and Howard Wainer recount the tale of Francis Galton and his discovery of weather patterns, which led to modern weather maps – providing a glimpse into the history of visual thinking and graphic communication, the subject …
View article: vegandevs/vegan: vegan 2.5-4 released
vegandevs/vegan: vegan 2.5-4 released Open
vegan 2.5-4 was released on CRAN. This fixes testing errors in R-devel due to changes in formula (issue #299) and errors with new optional tests in R-devel (issue #305). Bugs were fixed in decorana (issue #303) and goodness.cca and also do…
View article: Visualising the<i>Titanic</i>Disaster
Visualising the<i>Titanic</i>Disaster Open
The sinking of the Titanic has inspired books, movies and documentaries. But it has also motivated data visualisation designers to tell the story of the tragedy in new ways. Michael Friendly, Jürgen Symanzik and Ortac Onder review the firs…
View article: Visualizing Tests for Equality of Covariance Matrices
Visualizing Tests for Equality of Covariance Matrices Open
This paper explores a variety of topics related to the question of testing the equality of covariance matrices in multivariate linear models, particularly in the MANOVA setting. The main focus is on graphical methods that can be used to ad…
View article: vegandevs/vegan: CRAN 2.4 release
vegandevs/vegan: CRAN 2.4 release Open
This is a minor release that fixes the following issues orditkplot passes CRAN tests. anova(, by = "axis") ignored partial terms. Function uses now forward testing which is less dangerously biased than the previous marginal tests. summary …
View article: vegandevs/vegan: CRAN release 2.4-2
vegandevs/vegan: CRAN release 2.4-2 Open
vegan 2.4-2 was released in CRAN on 17/1/17. The release contains more complete NEWS. The major changes are: Fixes permutation tests in distance-based constrained ordination (issue #198, PR #199). Fixes internal scaling of scores in some c…
View article: Graphical methods for multivariate linear models in psychological research: An R tutorial
Graphical methods for multivariate linear models in psychological research: An R tutorial Open
This paper is designed as a tutorial to highlight some recent developments for visualizing the relationships among response and predictor variables in multivariate linear models (MLMs), and implemented in convenient packages for R. These m…
View article: vegan: CRAN release 2.4-0
vegan: CRAN release 2.4-0 Open
A new major release of vegan was released and is available on CRAN. This release is directly lifted from the current master branch and closes the gap between development and release versions. The release will start the new 2.4 series, and …