Make your R simulation models 20 times faster R can be frustratingly slow if you use its loops. However, you can speed it up significantly (e.g. 20 times!) using the Rcpp package. That could turn a day long simulation into an hour long simulation. I ... [Read more...]

Part 3: Spatial analysis of geotagged data See the other parts in this series of blog posts. In parts 1 and 2 we extracted spatial coordinates from our photos and then made an interactive web map that included data associate with those photos. Here I... [Read more...]

Part 2: Create an interactive web map with geotagged photos See the other parts in this series of blog posts. In part 1 we looked at making a simple interactive map using locations from our geotagged photos. Those photos have data associated with the... [Read more...]

Part 1: Extracting exif data from photos using R See the other parts in this series of blog posts. My camera comes with an inbuilt GPS allowing you to geo-reference photos you take. Here is a simple example for how we can use this feature to create a... [Read more...]

From geotagged photos to species distribution models My camera comes with an inbuilt GPS allowing you to geotag photos. I was on a family holiday on the beautiful Hornby Island (near Vancouver) and started wondering why the oysters growing on the rock... [Read more...]

A ‘tidyverse’ approach to simulation models I am a big fan of Rstudio’s (mainly led by Hadley Wickham) series of R packages known as the ‘tidyverse’. The packages modernise much of R’s functionality to better deal with moderately large da... [Read more...]

How to inset a plot on another plot in R The difficulty of plotting one plot over the top of another in R has always frustrated me. I often end up opening some photo editing software (like Gimp, which is free) and doing it manually. However, manual ed... [Read more...]