线形

- Solid line (default)
-- Dashed line
: Dotted line
-. Dash-dot line

颜色

r Red
g Green
b Blue
c Cyan
m Magenta
y Yellow
k Black
w White

数据点的形状

+ Plus sign
o Circle
* Asterisk
. Point
x Cross
'square' or s Square
'diamond' or d Diamond
^ Upward-pointing triangle
v Downward-pointing triangle
> Right-pointing triangle
'pentagram' or p Five-pointed star (pentagram)
'hexagram' or h Six-pointed star (hexagram)