A Saunders graphic is a plot of the 
th base-
digits of a function 
as a function of 
and 
.
The plots above show Saunders graphics for the functions ![f(x,y)=R[sin(x+iy)]](/images/equations/SaundersGraphic/Inline6.svg)
, ![I[sin(x+iy)]](/images/equations/SaundersGraphic/Inline7.svg)
, ![R[cos(x+iy)]](/images/equations/SaundersGraphic/Inline8.svg)
, and ![I[cos(x+iy)]](/images/equations/SaundersGraphic/Inline9.svg)
in base 
for digits 
to 3.
Similarly, the plots above show Saunders graphics for the same functions in base 
for digits 
and 2.
Saunders' original paper (Saunders 1972) considered slightly more general operations. Unfortunately, it is also rather difficult to read. Since the paper was written before the advent of fast computers and high-resolution displays, it plotted the resulting patterns as a matrix of printed characters. Saunders' original term for this sort of plot was therefore "character map."
