Choose with what column you need to fill the tree points
Arguments
- data
data.frame with columns Year.
- y_col
column to use for y axis of the plot. Col is because it's geom_area
- fill_col
column on which to fill. Write as ggplot input in
aes()- fill_scale
manual fill scale to be given as values in
scale_fill_manual()- ...
scales for action shape and color. color_scale and shape_scale values are set
