plot_vmt: Plot VMT over time.
In pbsag/swimr: Functions for Looking at Swim

plot_vmt

R Documentation

Plot VMT over time.

This function plots the sum of the daily link volumes over time, colored and faceted by arbitrary variables in the link table.

plot_vmt(
  db,
  facet_var = "MPO",
  facet_levels = NULL,
  index = TRUE,
  index_year = 2000
)

`db`	The scenario database.
`facet_var`	The variable to use in facetting the data.
`facet_levels`	A character vector giving the levels of the facet variable to use. Levels not called are dropped from the plot; default is `NULL`, meaning print all levels.
`index`	Whether to show the variables as indexed against the base year.
`index_year`	[Optional] index year that should be used as the starting year for data or plots;