Présentation de 6422.jps

30 setxunit
7.5 setborder
-15 15 setxrange
-15 15 setyrange
jpegmode
1 1 settkstep
.5 .5 setsubtkstep
1 1 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
0.75 setlinewidth
continu
bleu
/X {settvar
#rpn#   t*Cos (t)
} def
/Y {settvar
#rpn#   t*Sin (t)
} def
 0 5 pi mul  {X} {Y} Courbeparam