def get_price_chart(self, stat):
config = Config()
config.show_legend = False
config.human_readable = True
config.x_label_rotation = 90
config.pretty_print = True
config.min_scale = 12
config.height = 480
price_chart = pygal.Line(config)
price_chart.title = '售价走势图'
price_chart.x_labels = map(
lambda x: x.date_created.strftime("%Y-%m-%d"), stat)
price_chart.add('价格', [row.price for row in stat])
return price_chart.render_data_uri()
def get_sale_chart(self, stat, df):
config = Config()
config.show_legend = False
config.human_readable = True
# config.fill = True
config.x_label_rotation = 90
config.pretty_print = True
config.min_scale = 12
config.height = 480
# config.print_values = True
# config.print_values_position = 'top'
# config.value_font_size=30
sale_chart = pygal.Line(config)
sale_chart.title = '销量与销售额'
sale_chart.x_labels = map(
lambda x: x.date_created.strftime("%Y-%m-%d"), stat)
price_se = df.price.convert_objects(convert_numeric=True)
sale_se = df.sale_num.diff().fillna(0)
sale_chart.add('销量', [row for row in sale_se])
sale_chart.add('销售额', [row for row in price_se.mul(sale_se)],
secondary=True)
# return sale_chart.render()
return sale_chart.render_data_uri()