Publications by Bluecology blog
A brief guide to data visuals in R in 2018
Data visuals 2018 Supplementary notes for CJ Brown’s talks on dataviz in 2018 for Griffith University’s honours students and the UQ Winterschool in Bioinformatics. These notes run through some of the principles I present and also show R code for generating data visuals. If you want to take the dataviz quiz first, then click here. We will look...
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Survey your audience and visualise the results with R and Google forms
Survey your audience and visualise the results with R and Google forms I wanted to make my presentation on dataviz at the UQ School of Bioinformatics more interactive. A quiz is a good way to engage your audience. Given I was giving a talk about R datavisuals I thought it would be fun to visualise the quiz results using R live with the audience. ...
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Beginner Intermediate and Advanced R courses February 2019
Beginner, Intermediate and Advanced R courses February 2019 This is an announcement of our next set of R courses. There are 4 separate courses taught over 5th-8th February 2019. You can register with the Centre for Applications in Resource Management site at the University of Queensland. These R workshops are especially tailored for biology/ecolo...
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Generalized Linear Models understanding the link function
Generalized Linear Models: understanding the link function Generalized Linear Models (‘GLMs’) are one of the most useful modern statistical tools, because they can be applied to many different types of data. Count, binary ‘yes/no’, and waiting time data are just some of the types of data that can be handled with GLMs. We often call such d...
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R course in data wrangling and spatial analysis notes are online
R course in data wrangling and spatial analysis notes are online I have posted the notes to our new R course in data wrangling and spatial analysis notes on this webpage. The course is aimed at biological scientists who have some basic knowledge of R, but want to learn to use it for a broader variety of tasks. It is aimed to show how you can use ...
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Diary of becoming a Bayesian
Diary of becoming a Bayesian Here’s my timeline of going from frequentist stats to becoming a fully fledged Bayesian eco-statistician. 2006 Read the Ecological Detective (Hilborn and Walters), the philosophy makes sense, the history of falsification is interesting but, geez, the maths looks hard. 2008 Started PhD. Peers also interested in Bayes...
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R courses February 2020
R courses February 2020 Our next series of R courses for professionals and graduate students is now open for registration. The courses include 1-day for absolute beginners, 3 days for intermediate material and 3 days for the advanced class. They are run 18-21 February 2020 at the University of Queensland in St Lucia, Queensland. The courses are t...
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GLM tip getting non-linear with splines
GLM tips: get non-linear with splines This tip is great for a quick non-linear test, before you go all the way with a GAM or parametric non-linear model. You’ll need the splines library, which comes shipped with R anyway. First, let’s make up a bit of count data. The underlying ‘true’ model will be poisson (think count data) with a log li...
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Informing priors for a time-series models to detect declines in tiger sharks
Informing priors for a time-series models to detect declines in tiger sharks Our new research has revealed a 71% decline in tiger sharks across Queensland’s coastline (open-access version). In this blog I will explore the time-series modelling techniques we used to estimate this trend. (I’ve written about the significance of this decline else...
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Make a map of your study site with tmap
Make a map of your study site with tmap I’m loving the tmap package right now. Here’s why. And we’ll look at how to make a clean map of a study site as we go. We’ll use the data from our study of pollution and coral reefs in the Solmon Islands (repo is here). It runs smoothly with sf sf (‘Simple Features’) is the new spatial data stan...
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