How to change size of points of legend when 2 legends are present - Stack Overflow
Add legend at the top of a plot - Stack Overflow
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Add Legend to a plot - legend() Function in R - DataScience Made Simple
Line Types in R: The Ultimate Guide for R Base Plot and GGPLOT - Datanovia
R: legend boxes with more than one colour - Stack Overflow
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
ggplot2 legend : Easy steps to change the position and the appearance of a graph legend in R software - Easy Guides - Wiki - STHDA
R plot: Displaying both point type and line type in legend - Stack Overflow
Add legends to plots in R software : the easiest way! - Easy Guides - Wiki - STHDA
PCH in R Best Tips - Datanovia
The Complete ggplot2 Tutorial - Part2 | How To Customize ggplot2 (Full R code)
Adding a legend to a plot | R-bloggers
R 에서 범례 넣는 법 How to Plot Legend in R
Remove Legend in ggplot2 (3 Example Codes) | Hide One or All Legends
Create Legend in ggplot2 Plot in R (2 Examples) | Add Legends to Graph
Quick-R: Axes and Text
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
Padding Around Legend when using Pch in Base R - Stack Overflow
Add a legend to a base R chart – the R Graph Gallery
How To Easily Customize GGPlot Legend for Great Graphics - Datanovia
How to scale legend box or enlarge font size in the legend box in R - Stack Overflow
Draw Legend Outside of Plot Area in Base R Graphic (Example Code)
