Blog Archives

Launch R document from Smultron / Fraise

July 12, 2010
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A short code to launch R documents from Smultron / Fraise

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Subsampling for dummies

July 8, 2010
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A little piece of code dealing with the subsampling of matrices, in R. Useful if you want to use something akin to bootstrap, or just check the size of your sample with regard to various statistics.

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Drawing a trophic network (part 2)

July 6, 2010
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Drawing a trophic network (part 2)

Following discussion on the comments of the previous post, I thought about how it was possible to draw links going in several directions (i.e. there are no ‘clear’ differences between the levels, and species from level n can interact with species of level n, n+1, n-1, n±k, etc). This is now done, with a code

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Draw a trophic network with n levels

July 6, 2010
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Draw a trophic network with n levels

I published a short function to draw trophic networks with several levels, with links going from level n+1 to level n only. It will only be of interest for people working in ecology (but if you see another possible use, please let me know). It is available here – with examples. If I continue to

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Getting data from an image (introductory post)

March 5, 2010
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Getting data from an image (introductory post)

Hi there! This blog will be dedicated to data visualization in R. Why? Two reasons. First, when it comes to statistics, I am always starting by some exploratory analyses, mostly with plots. And when I handle large quantities of data, it’s nice to make some graphs to get a grasp about what is going on.

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