A ggplot object depicting the SSM curve(s) of each profile.
Arguments
ssm_object
Required. The results output of ssm_analyze().
angle_labels
Optional. Either NULL or a character vector that
determines the x-axis labels. If NULL, the labels will be the angle
numbers. If a character vector, must be the same length and in the same
order as the angles argument to ssm_analyze() (default = NULL).
base_size
Optional. A positive number corresponding to the base font
size in pts (default = 11).
drop_lowfit
Optional. A logical indicating whether to omit profiles with
low fit (<.70) or include them with dashed lines (default = FALSE).