plot_projected_trajectories: Plot simulations
In rscherrer/epianalysis:

This functions plots the simulations in 2D, along chosen dimensions.

1 2	plot_projected_trajectories(speciation_cube_data, vars, colvar, show_legend = T, xlim, ylim, confint, col, add = F)

`speciation_cube_data`	A data frame containing coordinates along the three isolation axes (spatial, ecological and mating) through time. Individual simulations are in rows.
`vars`	The two variables along which to plot the simulations.
`colvar`	Optional. The name of the variable to use to set colors according to.
`show_legend`	Optional. Whether to show the legend.
`xlim, ylim`	Ranges of values to plot.
`confint`	Confidence interval probabilities. If specified, the confidence interval is plotted instead of every single line. To plot mean and standard error instead of a confidence interval, provide this argument with an object of length different than 2 (which is what the function expects as boundaries of the confidence interval).
`col`	Color to plot the lines or the confidence interval. If specified, overrides the coloration per parameter value, if any.
`add`	Whether to append to a previous plot. Defaults to FALSE.