Publications by Scott Chamberlain
CRdata vs. Cloudnumbers
Cloudnumbers and CRdata are two new cloud computing services.I tested the two services with a very simple script. The script simply creates a dataframe of 10000 numbers via rnorm, and assigns them to a factor of one of two levels (a or b). I then take the mean of the two factor levels with the aggregate function.In CRdata you need to put in some ...
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(#ESA11) rOpenSci: a collaborative effort to develop R-based tools for facilitating Open Science
Our development team would like to announce the launch of rOpenSci. As the title states, this project aims to create R packages to make open science more available to researchers. http://ropensci.org/ What this means is that we seek to connect researchers using R with as much open data as possible, mainly through APIs. There ar...
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Tenure track position in systematics at the University of Vermont
There is an awesome position opening up for an assistant professor in systematics at the University of Vermont. Below is the announcement, and see the original post at the Distributed Ecology blog. Why is this related to R? One can do a lot of systematics work in R, including retrieving scientific collections data through an upcoming package hand...
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rnpn: An R interface for the National Phenology Network
The team at rOpenSci and I have been working on a wrapper for the USA National Phenology Network API. The following is a demo of some of the current possibilities. We will have more functions down the road. Get the publicly available code, and contribute, at Github here. If you try this out look at the Description file for the require...
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My take on an R introduction talk
Here is a short intro R talk I gave today…for what it’s worth…R Introduction View more presentations from schamber Related To leave a comment for the author, please follow the link and comment on their blog: Recology. R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topi...
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R tutorial on visualizations/graphics
Rolf Lohaus, a Huxley postdoctoral fellow here in the EEB dept at Rice University, gave our R course a talk on basic visualizations in R this morning.Enjoy! Related To leave a comment for the author, please follow the link and comment on their blog: Recology. R-bloggers.com offers daily e-mail updates about R news and tutorials ab...
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R talk on regular expressions (regex)
Regular expressions are a powerful in any language to manipulate, search, etc. data. For example:> fruit <- c("apple", "banana", "pear", "pineapple") > fruit [1] "apple" "banana" "pear" "pineapple" > grep("a", fruit) # there is an "a" in each of the words [1] 1 2 3 4 > > strsplit("a string", "s") # strsplit splits the st...
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Phylogenetic community structure: PGLMMs
So, I’ve blogged about this topic before, way back on 5 Jan this year.Matt Helmus, a postdoc in the Wootton lab at the University of Chicago, published a paper with Anthony Ives in Ecological Monographs this year (abstract here). The paper addressed a new statistical approach to phylogenetic community structure. As I said in the o...
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New food web dataset
So, there is a new food web dataset out that was put in Ecological Archives here, and I thought I would play with it. The food web is from Otago Harbour, an intertidal mudflat ecosystem in New Zealand. The web contains 180 nodes, with 1,924 links. Fun stuff…igraph, default layout plotigraph, circle layout plot, niceMy funky little gggraph fun...
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Two-sex demographic models in R
Tom Miller (a prof here at Rice) and Brian Inouye have a paper out in Ecology (paper, appendices) that confronts two-sex models of dispersal with empirical data.They conducted the first confrontation of two-sex demographic models with empirical data on lab populations of bean beetles Callosobruchus. Their R code for the modeling work ...
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