This plot shows each gene as dot uniquely determined by its log2 fold change at the first level (represented on the x-axis) and the fold change at the second level (represented on the y-axis).
a character string specifying if the plot is saved in jpeg (jpeg), postscript (postscript), pdf (pdf) format, or it is simply displayed on the screen(on screen). By default this value is on screen.
track
a character vector of gene names that will be explicitly highlighted in the scatterplot, if they match any gene contained in the object of class DEGs. By default this vector is empty.