Python matplotlib 線圖(plt.plot())
阿新 • • 發佈：2018-12-22
線圖
生成線圖物件Line2D
Bases: matplotlib.artist.Artist
class matplotlib.lines.Line2D(xdata, ydata, linewidth=None, linestyle=None, color=None, marker=None, markersize=None, markeredgewidth=None, markeredgecolor=None, markerfacecolor=None, markerfacecoloralt='none', fillstyle=None, antialiased=None, dash_capstyle plt.plot()引數設定
| Property | Value Type |
|---|---|
| alpha | 控制透明度，0為完全透明，1為不透明 |
| animated | [True False] |
| antialiased or aa | [True False] |
| clip_box | a matplotlib.transform.Bbox instance |
| clip_on | [True False] |
| clip_path | a Path instance and a Transform instance, a Patch |
| contains | the hit testing function |
| dash_capstyle | [‘butt’ ‘round’ ‘projecting’] |
| dash_joinstyle | [‘miter’ ‘round’ ‘bevel’] |
| dashes | sequence of on/off ink in points |
| data | 資料(np.array xdata, np.array ydata) |
| figure | 畫板物件a matplotlib.figure.Figure instance |
| label | 圖示 |
| linestyle or ls | 線型風格[‘-’ ‘–’ ‘-.’ ‘:’ ‘steps’ …] |
| linewidth or lw | 寬度float value in points |
| lod | [True False] |
| 資料點的設定[‘+’ ‘,’ ‘.’ ‘1’ ‘2’ ‘3’ ‘4’] | |
| markeredgecolor or mec | any matplotlib color |
| markeredgewidth or mew | float value in points |
| markerfacecolor or mfc | any matplotlib color |
| markersize or ms | float |
| markevery | [ None integer (startind, stride) ] |
| picker | used in interactive line selection |
| pickradius | the line pick selection radius |
| solid_capstyle | [‘butt’ ‘round’ ‘projecting’] |
| solid_joinstyle | [‘miter’ ‘round’ ‘bevel’] |
| transform | a matplotlib.transforms.Transform instance |
| visible | [True False] |
| xdata | np.array |
| ydata | np.array |
| zorder | any number |
屬性控制
有三種方式設定線的屬性
1）直接在plot()函式中設定
plt.plot(x, y, linewidth=2.0)2）通過獲得線物件，對線物件進行設定
line, = plt.plot(x, y, '-')
line.set_antialiased(False) # turn off antialising3）獲得線屬性，使用setp（）函式設定
lines = plt.plot(x1, y1, x2, y2)
# use keyword args
plt.setp(lines, color='r', linewidth=2.0)其他
一個應用，在圖上做一條垂直於x軸的線段，要用兩個相同x，不同y的點來刻畫
plt.plot([x,x],[0,y])