8.1 Introduction

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Packages - ggtext - ggtheme - gghighlight - palmerpenguins - ggrepel - grid

Functions - geom_text - geom_label - theme(plot.title = element_text()) - geom = “curve” - geom_vline

Resource - A ggplot Tutorial For Beautiful Plotting in R by Cedric Scherer August 5, 2019.

Annotation Definitions

• “Conceptually, an annotation supplies metadata for the plot: that is, it provides additional information about the data being displayed. From a practical standpoint, however, metadata is just another form of data. Because of this, the annotation tools in ggplot2 reuse the same geoms that are used to create other plots.”

Wickham, H., Navarro, N., & Lin Pedersen, T. (2016). Ggplot2: Elegant graphics for data analysis (Second ed.) Springer.

• “[Annotation] concerns judging the level of assistance an audience may require in order to understand the background, function and purpose of a project, as well as what guidance needs to be provided to help viewers perceive and interpret the data representations.”

Kirk, Andy. Data Visualisation (p. 231). SAGE Publications. Kindle Edition.