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remkoduursma

Remko Duursma

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Reading, downloading, and tidying data from the web
A tutorial on reading data from the web, including downloading, unzipping, and tidying.
Visualizing regression models
A tutorial on the use of the visreg package, with a few extras.
ALA4R and mapview
A quick introduction to the ALA4R package to retrieve species occurrences from the ALA, and mapview to make fancy interactive maps
Tips for Packages in R
A short summary of important concepts and commands for working with add-on packages in R
Calculating species climate envelopes in R
Obtain species occurrence records from the ALA (or GBIF), and extract climate records from Worldclim for the observations. The occurrence records should first be rasterized to avoid some of the sampling bias. This document shows how to do that.
The HIEv R package - A Primer
A walkthrough guide to the HIEv R package
Functions for packages
This tutorial shows a few useful functions to deal with packages that you may be unaware of. They are mostly useful when writing scripts that you’d like to be reproducable on another machine.
Non-linear regression
Bootstrap for linear models