本文內容來自於matplotlib官網：matplotlib官網markers資料
This module contains functions to handle markers. Used by both the marker functionality of plot and scatter.
All possible markers are defined here:
該模塊包含處理標記的功能。 用於plot和scatter的這兩個模塊的標記功能。
這里定義了所有可能的標記：
| 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 |
"|" |
vline |
"_" |
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. |
(numsides, style, angle) |
The marker can also be a tuple (
|
For backward compatibility, the form (verts, 0) is also accepted, but it is equivalent to just verts for giving a raw set of vertices that define the shape.
None is the default which means 'nothing', however this table is referred to from other docs for the valid inputs from marker inputs and in those cases None still means 'default'.
為了向后兼容，表單（verts，0）也被接受，但它只相當於verts，用於給出一組定義形狀的原始頂點。
無默認值表示“無”，但是此表從其他文檔中引用來自標記輸入的有效輸入，在這些情況下，“無”仍表示“默認”。
作者：biyoulin
出處：http://www.cnblogs.com/biyoulin/
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