5 search results for "adonis"

Two-Way PERMANOVA (with Vegan-Function adonis) Using Customized Contrasts

August 8, 2011
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Two-Way PERMANOVA  (with Vegan-Function adonis) Using Customized Contrasts

...say you have a multivariate dataset and a two-way factorial design - you do a PERMANOVA and the aov-table (adonis is using ANOVA or "sum"-contrasts) tells you there is an interaction - how to proceed when you want to go deeper into the ana...

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Adonis (PERMANOVA) – Assumptions

April 26, 2011
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Adonis (PERMANOVA) – Assumptions

Before you use PERMANOVA (R-vegan function adonis) you should read the user notes for the original program by the author (Marti J. Anderson) who first came up with this method. An important assumtption for PERMANOVA is same "multivariate spread&qu...

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Multivariate Repeated Measurements With adonis():

April 18, 2011
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Multivariate Repeated Measurements With adonis():

Lately I had to figure out how to do a repeated measures (or mixed effects) analysis on multivariate (species) data. Here I share code for a computation in R with the adonis function of the vegan package. Credit goes to Gavin Simpson providing most of ...

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Blog Statistics with StatCounter & R

December 19, 2011
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Blog Statistics with StatCounter & R

If you're interested in analysing your blog's statistics this can easily be done with a web-service like StatCounter (free, only registration needed, quite extensive service) and with R.After implementing the StatCounter script in the html code of a we...

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Because it’s Friday: Analytics of an Engagement

July 16, 2010
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Because it’s Friday: Analytics of an Engagement

The always-interesting R blogger and political scientist Drew Conway -- and self-styled luckiest man on earth -- just announced some very happy news: he just got engaged to his future wife! Congratulations, Drew! (Drew proposed the traditional way, on a lovely European vacation. But if he'd just held off a couple of days he could have proposed via towel-clad...

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