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This article will explain in detail how to use matplotlib to draw K diagram. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Apple stock data (2016-1-4-2017-4-20) are obtained in the following table:

DateOpenHighLowClose2016/1/4102.610001105.370003102105.3499982016/1/5105.75105.849998102.410004102.7099992016/1/6100.559998102.37000399.870003100.6999972016/1/798.68100.12999796.4396.4499972016/1/898.55000399.11000196.76000296.959999

Draw the code:

Import matplotlib.pyplot as pltfrom matplotlib.dates import DateFormatter, WeekdayLocator,DayLocator, MONDAYimport pandas as pdimport matplotlib.dates as mdatesfrom matplotlib.finance import candlestick_ohlc#1. Data preprocessing # read data data=pd.read_csv ("C:/Users/Administrator/Desktop/APPL/APPL.csv") # convert time data to pandas time format data ["Date"] = pd.to_datetime (data ["Date"]) # convert time data to matplotlib time format data ['Date'] = data [' Date'] .apply (lambda d: mdates.date2num (d.to_pydatetime () # transfer the data box Replace it with tuple tuples = [tuple (x) for x in data [['Date'] 'Open','High','Low','Close']] .values] # 2. Image setting # to get fig and ax object fig Ax = plt.subplots () # adjust the length of the Abscissa distance to the bottom fig.subplots_adjust (bottom=0.2) # set the display interval of Abscissa labels (display Monday of each week) mondays = WeekdayLocator (MONDAY) ax.xaxis.set_major_locator (mondays) # set the display interval of Abscissa ticks (each scale represents one day) alldays = DayLocator () ax.xaxis.set_minor_locator (alldays) # set the display style of Abscissa labels For "month, day", Jan 12weekFormatter = DateFormatter ('% b% d') ax.xaxis.set_major_formatter (weekFormatter) # shows the label # dayFormatter = DateFormatter ('% d') # ax.xaxis.set_minor_formatter (dayFormatter) # 3 for each scale. Drawing # Candlestick drawing candlestick_ohlc (ax, tuples, width=0.6,colorup='r',colordown= "g") # adjust the display style of the Abscissa label to obtain the current axis plt.gca, the x-axis scale label get_xticklabels, the conversion angle rotation, the rotation angle hori...entplt.setp (plt.gca (). Get_xticklabels (), rotation=45, horizontalalignment='right') plt.show ()

Result picture:

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