python-matplotlibHow to chart candlestick

Usage example

import matplotlib.pyplot as plt

#create figure
plt.figure()

#define width of candlestick elements
width = .4
width2 = .05

#define up and down prices
up = prices[prices.close>=prices.open]
down = prices[prices.close<prices.open]

#define colors to use
col1 = 'green'
col2 = 'red'

#plot up prices
plt.bar(up.index,up.close-up.open,width,bottom=up.open,color=col1)
plt.bar(up.index,up.high-up.close,width2,bottom=up.close,color=col1)
plt.bar(up.index,up.low-up.open,width2,bottom=up.open,color=col1)

#plot down prices
plt.bar(down.index,down.close-down.open,width,bottom=down.open,color=col2)
plt.bar(down.index,down.high-down.open,width2,bottom=down.open,color=col2)
plt.bar(down.index,down.low-down.close,width2,bottom=down.close,color=col2)

#rotate x-axis tick labels
plt.xticks(rotation=45, ha='right')

#display candlestick chart
plt.show()