Function to setup the graphical device to cover the range of locations.
1 
xdata 
vector xaxis coordinates of locations, or either a n \times 2
matrix or a list with named components 
ydata 
vector yaxis coordinates of locations, not needed if n \times 2 matrix is given for xdata 
pretty.call 
if 
maxdim 
plot dimensions, 
axes 
logical value indicating whether both axes should be drawn on the plot 
A list containing the following named components:
xlim, ylim 
plot limits for the x and yaxis, respectively 
oldpin 
old plot dimensions, as returned by

newpin 
new plot dimensions 
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