1-character string giving the type of plot desired. The
following values are possible, for details, see plot
:
"p"
for points, "l"
for lines,
"b"
for both points and lines,
"c"
for empty points joined by lines,
"o"
for overplotted points and lines,
"s"
and "S"
for stair steps and
"h"
for histogram-like vertical lines. Finally,
"n"
does not produce any points or lines.