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我正在尝试将一个系列(由 [1,2,0,....] 列表组成)添加到我使用 matplotlib 制作的烛台图表中,但无法弄清楚如何为每个特定蜡烛包含这些标签图表。基本上我想制作一张这样的图表:

指标
(来源:linnsoft.com

在每根蜡烛上方或下方带有带有数字(我的信号系列)的标签。有什么办法可以达到吗?

不知道它是否有帮助,但我的系列是熊猫 DataFrame 类型的......

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1 回答 1

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这是一个源自 - http://matplotlib.org/examples/pylab_examples/finance_demo.html的示例

请特别注意ax.annotate下面代码中的方法调用。

from pylab import *
from matplotlib.dates import  DateFormatter, WeekdayLocator, HourLocator, \
     DayLocator, MONDAY
from matplotlib.finance import quotes_historical_yahoo, candlestick,\
     plot_day_summary, candlestick2

# (Year, month, day) tuples suffice as args for quotes_historical_yahoo
date1 = ( 2004, 2, 1)
date2 = ( 2004, 4, 12 )


mondays = WeekdayLocator(MONDAY)        # major ticks on the mondays
alldays    = DayLocator()              # minor ticks on the days
weekFormatter = DateFormatter('%b %d')  # Eg, Jan 12
dayFormatter = DateFormatter('%d')      # Eg, 12

quotes = quotes_historical_yahoo('INTC', date1, date2)
if len(quotes) == 0:
    raise SystemExit

fig = figure()
fig.subplots_adjust(bottom=0.2)
ax = fig.add_subplot(111)
ax.xaxis.set_major_locator(mondays)
ax.xaxis.set_minor_locator(alldays)
ax.xaxis.set_major_formatter(weekFormatter)
#ax.xaxis.set_minor_formatter(dayFormatter)

#plot_day_summary(ax, quotes, ticksize=3)
candlestick(ax, quotes, width=0.6)

ax.xaxis_date()
ax.autoscale_view()
setp( gca().get_xticklabels(), rotation=45, horizontalalignment='right')

import datetime
dt = datetime.datetime(2004, 3, 8)

# Annotating a specific candle
ax.annotate('This is my special candle', xy=(dt, 24), xytext=(dt, 25),
            arrowprops=dict(facecolor='black', shrink=0.05),
           )

show()

如果您运行此文件,结果图应显示:-

在此处输入图像描述

于 2012-11-19T15:24:43.303 回答