Posts Tagged ‘ environmetrics ’

Generating sets of permutations

October 21, 2011
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Generating sets of permutations

In previous posts I discussed how to generate a single permutation from a fully-randomised or restricted permutation design using shuffle(). Here I want to briefly mention the shuffleSet() function and illustrate it’s usage. Every time you call shuffle() it has to interpret the … Continue reading →

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permute: a package for generating restricted permutations

October 4, 2011
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permute: a package for generating restricted permutations

Multivariate ordination methods are commonly used in ecology to investigate patterns in species composition in space or time. Constrained ordination methods such as redundancy analysis (RDA) and canonical correspondence analysis (CCA) are effectively just multiple regressions, but we lack the … Continue reading →

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No lake is an island: PhD Opportunity

June 14, 2011
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No lake is an island: PhD Opportunity

NERC recently funded the formation of the UK Lake Ecological Observation Network (UKLEON) as part of the its Networks of Sensors programme. UKLEON is lead by Ian Jones at CEH Lancaster. A fully-funded PhD project is associated with the UKLEON … Continue reading →

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