请看第三个实例 这里(在“添加自定义文本和注释”一节中)。如果您放大图表,您会发现该示例在日期'2007-12-01'
上插入了一条垂直线。如果日期是一个交易日(例如'2007-11-29'
),那么该垂直线将穿过那天蜡烛图的正中央。
请看第三个实例 这里(在“添加自定义文本和注释”一节中)。如果您放大图表,您会发现该示例在日期'2007-12-01'
上插入了一条垂直线。如果日期是一个交易日(例如'2007-11-29'
),那么该垂直线将穿过那天蜡烛图的正中央。
datetime.datetime(2020, 10, 11, 0, 0)
并且:
datetime.datetime(2020, 10, 12, 0, 0)
datetime.datetime(2020, 10, 11, 12, 0)
import pandas as pd
import plotly.graph_objects as go
from datetime import datetime
# data
open_data = [33.0, 33.3, 33.5, 33.0, 34.1]
high_data = [33.1, 33.3, 33.6, 33.2, 34.8]
low_data = [32.7, 32.7, 32.8, 32.6, 32.8]
close_data = [33.0, 32.9, 33.3, 33.1, 33.1]
dates = [datetime(year=2020, month=10, day=10),
datetime(year=2020, month=10, day=11),
datetime(year=2020, month=10, day=12),
datetime(year=2020, month=10, day=13),
datetime(year=2020, month=10, day=14)]
# data organized in a pandas dataframe
df=pd.DataFrame(dict(open=open_data,
high=high_data,
low=low_data,
close=close_data,
dates=dates))
# calculations using to_pydatetime() to get the date/time
# between your dates
a=df.dates.iloc[1].to_pydatetime()
b=df.dates.iloc[2].to_pydatetime()
linedate = a + (b - a)/2
# plotly figure setup
fig = go.Figure(data=[go.Candlestick(x=df.dates,
open=open_data, high=high_data,
low=low_data, close=close_data)])
# edit layouts
fig.update_layout(
title='Dates are pandas timestamps',
yaxis_title='AAPL Stock',
shapes = [dict(
x0=linedate, x1=linedate, y0=0, y1=1, xref='x', yref='paper',
line_width=2)],
annotations=[dict(x=linedate, y=0.8, xref='x', yref='paper',font=dict(
color="blue",size=14),
showarrow=False, xanchor='left', text='Vertical line between two dates')]
)
fig.show()