example for feature/coord-manual-lim in ggplot2

gistfile1.r

lims <- data.frame(vs=c(0,0,1,1), am=c(0,1,0,1), 
  xmin=c(6,2,2,2), xmax=c(10,10,6,4), ymin=c(10,15,17,21),ymax=c(20,26,25,34))

#ggplot(mtcars, aes(cyl, mpg)) + geom_point() + 
#  facet_grid(~vs+am, scale="free", lims=lims) # does not work with facet_grid

ggplot(mtcars, aes(cyl, mpg)) + geom_point() + 
  facet_wrap(~vs+am, scale="free", coord.limits=lims) + coord_cartesian(wise=T) # please try also wise=F