我创建了一个图形，该图形将三个变量拉入堆叠的条形图中，但无法显示图例来显示说明。
我试图将别名r更改为使用我想要的名称（运营商延迟，天气延迟和飞机延迟起飞），但这没有用。
# Create percents
r = [0,1,2,3,4]
totals = [i+j+k for i,j,k in zip(df_delay_type['CarrierDelay'], df_delay_type['WeatherDelay'], df_delay_type['LateAircraftDelay'])]
CarrierDelay = [i / j * 100 for i,j in zip(df_delay_type['CarrierDelay'], totals)]
WeatherDelay = [i / j * 100 for i,j in zip(df_delay_type['WeatherDelay'], totals)]
LateAircraftDelay = [i / j * 100 for i,j in zip(df_delay_type['LateAircraftDelay'], totals)]
# plot
barWidth = 0.85
names = ('American Airlines Inc.','Alaska Airlines Inc.','Delta Air Lines Inc.','United Air Lines Inc.','Southwest Airlines Co.')
# Create green Bars
plt.bar(r, CarrierDelay, color='#b5ffb9', edgecolor='white', width=barWidth)
# Create orange Bars
plt.bar(r, WeatherDelay, bottom=CarrierDelay, color='#f9bc86', edgecolor='white', width=barWidth)
# Create blue Bars
plt.bar(r, LateAircraftDelay, bottom=[i+j for i,j in zip(CarrierDelay, WeatherDelay)], color='#a3acff', edgecolor='white', width=barWidth)
# Custom x axis
plt.xticks(r, names, rotation = 0, fontsize=12, fontweight='bold')
plt.xlabel("Airlines", fontsize=11, fontweight='bold')
plt.ylabel('Percent of Delay', fontsize=11, fontweight='bold')
plt.title ('Delays by Type and Carrier', fontsize=14, fontweight='bold')
# Show graphic
plt.legend(r)
plt.show()
此代码生成的图例在颜色旁边显示“ 0”，“ 1”和“ 2”，但我想改为看到“ Carrier Delay”，“ Weather Delay”和“ Late Aircraft Delay”。