Generate gene variance plots
plot_vg(gene_var_stats, plots = "all", loess_fit = NULL)a data.frame of statistics generated by compute_vg_stats()
a character vector specifying one or more of the following options (Default is "all"):
qq_z_plot
qq_loess.z_plot
z_density_plot
loess.z_density_plot
dispersion_fit_plot
all
a loess fit object as generated by gene_loess_fit(). This is required only for the dispersion_fit_plot.
a list object with multiple ggplot2 plot objects depending on the plots parameter