Legend in R pch not filled - Stack Overflow
R: legend with points and lines being different colors (for the same legend item) - Stack Overflow
Describe Parts of a Chart in Graphical Form in R Programming - legend() Function - GeeksforGeeks
Taking control of the legend in raster (in R) – biologyforfun
Mastering R Plot – Part 1: colors, legends and lines | R-bloggers
How to change size of points of legend when 2 legends are present - Stack Overflow
Add legends to plots in R software : the easiest way! - Easy Guides - Wiki - STHDA
R: text of legend falls outside of plot when exporting to PDF - Stack Overflow
The Complete ggplot2 Tutorial - Part2 | How To Customize ggplot2 (Full R code)
Quick-R: Axes and Text
Draw Legend Outside of Plot Area in Base R Graphic (Example Code)
R Tutorials | Adding Legends to a Plot in R
How To Easily Customize GGPlot Legend for Great Graphics - Datanovia
Create Legend in ggplot2 Plot in R (2 Examples) | Add Legends to Graph
Adding a legend to a plot | R-bloggers
ggplot2 legend : Easy steps to change the position and the appearance of a graph legend in R software - Easy Guides - Wiki - STHDA
PCH in R Best Tips - Datanovia
Add legends to plots in R software : the easiest way! - Easy Guides - Wiki - STHDA
How to scale legend box or enlarge font size in the legend box in R - Stack Overflow
Data Visualization with R - Legends - Rsquared Academy Blog - Explore Discover Learn
Figure 14-7: External Legends – SGR
