break_time_line: Obtain break points along a time line
In Yutong441/TBdev: Infer a Trophoblast Developmental Trajectory

Description Usage Arguments

This function finds the interval of different periods along a time line. This is not trivial, because sometimes different periods overlap with each other. For aesthetic reasons however, there is significant demand to show the periods as being mutually exclusive (which I strongly dislike). As a result, this function will first find the min and max of time periods in each group. The min is taken as the starting point. If the ending point is the min of the next time period. If the min of the next time period precedes that of its previous one, the starting point of the next time period is taken to be the max of the previous time period.

break_time_line(
  x,
  time_col,
  color_col,
  time_order = NULL,
  abs_min = NULL,
  abs_max = NULL
)

`x`	a dataframe of all items
`time_col`	which column in `x` has the time information
`color_col`	which column in `x` has the grouping information
`time_order`	order of the grouping labels in `color_col`. If not supplied, it is assumed to follow the order of the mean time of each roup in `color_col`
`abs_min`	starting point of the time line. If NULL, it is assumed to be the minimum time in `x`