Internal function to get list of icons (images) and/or a list of their labels for use in TADA mapping functions.
Arguments
- icons
Boolean argument. When icons = TRUE, the list of images used for TADA maps is returned. When icons = FALSE, no list of images is returned. Default is icons = TRUE.
- labels
Boolean argument. When labels = TRUE, the list of labels used for TADA maps is returned. When labels = FALSE, no list of labels is returned. Default is labels = TRUE.