The Complete ggplot2 Tutorial - Part2 | How To Customize ggplot2 (Full R code)
R: legend boxes with more than one colour - Stack Overflow
Describe Parts of a Chart in Graphical Form in R Programming - legend() Function - GeeksforGeeks
Line Types in R: The Ultimate Guide for R Base Plot and GGPLOT - Datanovia
R plot: Displaying both point type and line type in legend - Stack Overflow
How to change size of points of legend when 2 legends are present - Stack Overflow
Create Legend in ggplot2 Plot in R (2 Examples) | Add Legends to Graph
ggplot2 legend : Easy steps to change the position and the appearance of a graph legend in R software - Easy Guides - Wiki - STHDA
How to display a legend outside a R plot | Ben Fradet
Legend in R pch not filled - Stack Overflow
Add legends to plots in R software : the easiest way! - Easy Guides - Wiki - STHDA
Remove Legend in ggplot2 (3 Example Codes) | Hide One or All Legends
ggplot2 legend : Easy steps to change the position and the appearance of a graph legend in R software - Easy Guides - Wiki - STHDA
Add legend with color and range in R - Stack Overflow
R: legend with points and lines being different colors (for the same legend item) - Stack Overflow
Figure 14-7: External Legends – SGR
Add legend at the top of a plot - Stack Overflow
Mastering R Plot – Part 1: colors, legends and lines | R-bloggers
Draw Legend Outside of Plot Area in Base R Graphic (Example Code)
Add legends to plots in R software : the easiest way! - Easy Guides - Wiki - STHDA
The Complete ggplot2 Tutorial - Part2 | How To Customize ggplot2 (Full R code)
Padding Around Legend when using Pch in Base R - Stack Overflow
How To Easily Customize GGPlot Legend for Great Graphics - Datanovia
Legend for a continuous color scale in R | Mieux Vaut Prévenir que Guérir!
R: text of legend falls outside of plot when exporting to PDF - Stack Overflow
