Scripts & graph gallery

Small tutorials and plotting scripts I wrote between 2017 and 2020, mostly while answering questions or figuring something out for my own work. They are older, but people may still find them useful, so they stay here.

More writing on my WordPress blog and in my Stack Overflow answers.

Tutorials

Use geom_rect or geom_polygon from ggplot2 for shading effects May 2020 · ggplot2 · also on RPubs
Pacific-centred map with Voronoi tessellation and repelled text labels May 2020 · maps, sf, ggrepel · also on RPubs
Pixel-based classification of Sentinel-2 images with caret: Random Forests, SVM and neural networks April 2019 · remote sensing, machine learning · code
An interactive PCA biplot with ggbiplot and plotly August 2018 · PCA, plotly
Coefficient of determination for the one-to-one line May 2018 · statistics
Visualising and annotating a phylogenetic tree with ggtree January 2018 · phylogenetics, ggplot2
Digitise graphs with R: import and edit graphs from PDF files January 2018 · grImport, PostScript

Graph gallery

Each picture links to the R script that draws it. The coding style varies, because each one was an experiment with a new package or idea.

Maps

Choropleth world map tmap · interactive version
World cities, Eckert IV projection ggplot2 & ggrepel
World map, Robinson projection ggplot2
Pacific-centred world map ggplot2
Shifting the central meridian ggplot2 & maptools

Line and dot plots

Coloured confidence bands ggplot2
Coloured confidence lines ggplot2
Dot plot with confidence intervals ggplot2
Simple confidence bands ggplot2
Simple confidence lines ggplot2
Line plot with inward ticks ggplot2
Line plot with inward ticks base R

Barplots

Barplot with error bars base R
Dodged barplot ggplot2

Other

Annotated phylogenetic tree ggtree
Tree with clade bars ggtree