Density plot
A density plot can be used to compare the distribution of different variables.
Plotting with panels and labelling
It is easy to produce figures with multiple panels in R.
Bar plots
Barplots can be useful for comparing different treatments.
Boxplot
Boxplots allow to easily visualise factor levels within a variable
Plot error bars
Here is how to plot the values of two traits, along with error bars for these values, to see if they overlap in different instances.
Save a plot
It is useful to save R graphics with code, so the file creation and naming can be automated.
Symbols lines and colours
Here is some code to quickly access what the colour, line and shape numbers produce.
Lines
Often a model will show a difference between the two levels of a factor. R makes it easy to illustrate the difference graphically.