combine ggplot grobs or plots
grombine(..., by = "x", size = "last", draw = T)plots/grobs to combine. A mix of the two is fine.
axis to combine plots by. Default: 'x'
which plot's dimensions to prioritise. One of 'first' or 'last'. Default: 'last'
logical to return plot instead of grob. Default: T
ggplot plot or grob object, with all objects in ... combined.