matplotlib marker 设置

点号设置（marker）

如果不指定linstyle则默认为直线。
plot(marker = “”)

marker	description
.	point
,	pixel
o	circle
v	triangle_down
^	triangle_up
<	triangle_left
>	triangle_right
1	tri_down
2	tri_up
3	tri_left
4	tri_right
8	octagon
s	square
p	pentagon
P	plus (filled)
*	star
h	hexagon1
H	hexagon2
+	plus
x	x
X	x (filled)
D	diamond
d	thin_diamond
_	hline
TICKLEFT	tickleft
TICKRIGHT	tickright
TICKUP	tickup
TICKDOWN	tickdown
CARETLEFT	caretleft (centered at tip)
CARETRIGHT	caretright (centered at tip)
CARETUP	caretup (centered at tip)
CARETDOWN	caretdown (centered at tip)
CARETLEFTBASE	caretleft (centered at base)
CARETRIGHTBASE	caretright (centered at base)
CARETUPBASE	caretup (centered at base)
None, ” ” or “”	nothing
... ’	render the string using mathtext.
verts	a list of (x, y) pairs used for Path vertices. The center of the marker is located at (0,0) and the size is normalized.
path	a Path instance.