我已经实现了这个例子：
http://matplotlib.sourceforge.net/examples/pylab_examples/finance_demo.html?highlight=candlestick
我想为烛台实现鼠标悬停功能，以便我可以在弹出窗口或某个面板中的标签中看到烛台的开盘/高/低/收盘。我跟着：
http://matplotlib.sourceforge.net/examples/event_handling/pick_event_demo.html
不幸的是，函数：
candlestick(ax, quotes, width=0.6)
没有picker=True 关键字。有没有其他方法可以实现鼠标悬停功能？
matplotlib.finance 的文档 http://doc.astro-wise.org/matplotlib.finance.html
【问题讨论】：
标签： python events matplotlib finance
我已经提供了一个链接到一些有价值信息的答案。因为你想通过查看数据而不是艺术家来处理事情，所以我想我会给你更多的帮助。我所做的是采用 matplotlib 烛台示例，并添加了一个鼠标移动事件，该事件打印鼠标当前结束的日期以及 3 个最近（及时）的股票。从这一点来看，只需将两个答案结合起来即可产生所需的结果：
#!/usr/bin/env python
import matplotlib.pyplot as plt
import pylab
from matplotlib.dates import DateFormatter, WeekdayLocator, HourLocator, \
DayLocator, MONDAY, num2date
from matplotlib.finance import quotes_historical_yahoo, candlestick,\
plot_day_summary, candlestick2
# (Year, month, day) tuples suffice as aregs 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 = plt.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)
candlestick(ax, quotes, width=0.6)
ax.xaxis_date()
ax.autoscale_view()
plt.setp(ax.get_xticklabels(), rotation=45, horizontalalignment='right')
def on_move(event):
ax = event.inaxes
if ax is not None:
# convert x y device coordinates to axes data coordinates
date_ordinal, y = ax.transData.inverted().transform([event.x, event.y])
# convert the numeric date into a datetime
date = num2date(date_ordinal)
# sort the quotes by their distance (in time) from the mouse position
def sorter(quote):
return abs(quote[0] - date_ordinal)
quotes.sort(key=sorter)
print 'on date %s the nearest 3 openings were %s at %s respectively' % \
(date,
', '.join([str(quote[1]) for quote in quotes[:3]]),
', '.join([str(num2date(quote[0])) for quote in quotes[:3]]))
on_move_id = fig.canvas.mpl_connect('motion_notify_event', on_move)
plt.show()
HTH
【讨论】：
我写了一个答案来处理“鼠标悬停”事件here。这将是了解如何做类似事情的一个很好的第一点。
【讨论】：