import numpy as np

import pandas as pd

import matplotlib pyplot as plt

%matplotlib inline

import warnings

warnings.filterwarnings('ignore')

#不發(fā)出警告

from bokeh.io import output_notebook

output_notebook()

#導(dǎo)入notebook繪圖模塊

from bokeh.plottings import figure,show

#導(dǎo)入圖標繪制，圖標展示模塊

from bokeh.models.annotations import Span

#導(dǎo)入Span模塊

x=np.linspace(0,20,200)

y=np.sin(x)

#創(chuàng)建x,y數(shù)據(jù)

p=figure(y_range=(-2,2))

p.line(x,y)

#繪制曲線

upper=Span(location=1,#設(shè)置位置，對應(yīng)坐標值

dimension='width',#設(shè)置方向，width為橫向，height為縱向

line_color='olive',line_width=4#設(shè)置線顏色，線寬

p.add_layout(upper)

#繪制輔助線

lower=Span(location=1,dimension='width',line_color='firbrick',line_width=4)

p.add_layout(lower)

#繪制輔助線2

import numpy as np

import pandas as pd

import matplotlib.pyplot as plt

%matplotlib inline

import warnings

warnings.filterwarnings('ignore')

#不發(fā)出警告