forceLim: Get the plot limits to set for the desired plot window
Description
plot manually adds an extra region to the plot on top of the given
'xlim' and 'ylim', amounting to 4
This function tells you what limits to set so that the boundaries of the plot
are precisely the min and max you want.
Usage
forceLim(dlim)
Arguments
dlim
the limits you want to set
Value
the min and max to set for the desired plot limits