matplotlib：折线图

Posted 2020-11-18 felixwang2

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.dates as mdates

# 解决中文显示问题
plt.rcParams[‘font.sans-serif‘] = [‘STLiti‘]  # 用来正常显示中文标签
plt.rcParams[‘axes.unicode_minus‘] = False  # 用来正常显示负号
# 有中文出现的情况，需要u‘内容‘

fig = plt.figure()
ax1 = fig.add_subplot(111)
#设置标题
ax1.set_title(‘折线图‘)
#设置X轴标签
plt.xlabel(‘X‘)
#设置Y轴标签
plt.ylabel(‘Y‘)

x=np.linspace(-10,10,100)# -10到10平均分成100份
y=x**3
# plt.plot(x,y) # 方式一
ax1.plot(x, y, color=‘green‘, linestyle=‘dashed‘, marker=‘o‘,
     markerfacecolor=‘blue‘, markersize=12)
#设置图标
plt.legend(‘x‘)
plt.show()

plt.plot()参数设置

Property	Value Type
alpha	控制透明度，0为完全透明，1为不透明
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
color or c	颜色设置
contains	the hit testing function
dash_capstyle	[‘butt’ ‘round’ ‘projecting’]
dash_joinstyle	[‘miter’ ‘round’ ‘bevel’]
dashes	sequence of on/off ink in points
data	数据(np.array xdata, np.array ydata)
figure	画板对象a matplotlib.figure.Figure instance
label	图示
linestyle or ls	线型风格[‘-’ ‘–’ ‘-.’ ‘:’ ‘steps’ …]
linewidth or lw	宽度float value in points
lod	[True False]
marker	数据点的设置[‘+’ ‘,’ ‘.’ ‘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