How did I do that???: The simplest way to plot a legend outside a plot in R
Styling Base R Graphics - Jumping Rivers
Add a legend to a base R chart – the R Graph Gallery
One R Tip A Day: Two plot with a common legend - base graphics
R plot: Displaying both point type and line type in legend - Stack Overflow
Legends in graphs and charts. Statistics for Ecologists Exercises.
How to display a legend outside a R plot | Ben Fradet
Taking control of the legend in raster (in R) – biologyforfun
Data visualization in R: Show legend outside of the plotting area | coders corner
Add legends to plots in R software : the easiest way! - Easy Guides - Wiki - STHDA
Adding a legend to a plot | R-bloggers
Figure 14-7: External Legends – SGR
Add legend at the top of a plot - Stack Overflow
Data Visualization with R - Legends - Rsquared Academy Blog - Explore Discover Learn
Add Legend to a plot - legend() Function in R - DataScience Made Simple
Add legends to plots in R software : the easiest way! - Easy Guides - Wiki - STHDA
Describe Parts of a Chart in Graphical Form in R Programming - legend() Function - GeeksforGeeks
Advanced Graphing
Draw Legend Outside of Plot Area in Base R Graphic (Example Code)
R 에서 범례 넣는 법 How to Plot Legend in R
