object: A 'volc3d' class object from a 2x3 analysis generated by deseq_2x3_polar()
genes: Vector of genes to plot
scheme: Vector of 3 colours for plotting
labs: Optional character vector of labels for the groups
error_type: Either "ci" or "se" to specify whether error bars use 95% confidence intervals or standard error
error_width: Width of error bars
gap: Size of gap between groupings for each gene
transpose: Logical whether to transpose the plot
mar: Vector of margins on four sides. See par()
...: Optional arguments
facet: Logical whether to use facets for individual genes (ggplot2 only)
Returns
Returns a plot using either base graphics (forest_plot), plotly (forest_plotly) or ggplot2 (forest_ggplot). forest_plot also invisibly returns the dataframe used for plotting.