我想使用 matplotlib 將值添加到堆積條形圖。到目前為止，我已經(jīng)能夠創(chuàng)建堆積條形圖，但我對(duì)如何添加注釋感到困惑。我想要一個(gè)類(lèi)似的輸出，而不是整個(gè)圖表，而只是中間的注釋。import pandas as pdimport seaborn as snsimport matplotlib.pyplot as pltdata = {'Range':['<10','>10', '>= 20', '<10','>10', '>= 20', '<10','>10', '>= 20'],? ? 'Price':[50,25,25,70,20,10,80,10,10]? ? 'Value':[100,50,50,140,40,20,160,20,20]}? ??df1 = pd.DataFrame(data)b1 = df1[(df1['Range'] == '<10']['Price']b2 = df1[df1['Range'] == '>10']['Price']b3 = df1[df1['Range'] == '>= 20']['Price']totals = [i+j+k for i,j,k in zip(b1,b2,b3)]greenBars = [i / j * 100 for i,j in zip(b1, totals)]orangeBars = [i / j * 100 for i,j in zip(b2, totals)]blueBars = [i / j * 100 for i,j in zip(b3, totals)]barWidth = 0.5names = ('low', 'medium', 'high')r = [0,1,2]plt.bar(r, greenBars, color='#b5ffb9', edgecolor='white', width=barWidth, label = '$<10')plt.bar(r, orangeBars, bottom=greenBars, color='#f9bc86', edgecolor='white', width=barWidth, label = '$>10')plt.bar(r, blueBars, bottom=[i+j for i,j in zip(greenBars, orangeBars)], color='#a3acff', edgecolor='white', width=barWidth, label = '$>=20')plt.xticks(r, names)plt.xlabel("group")plt.legend(loc='upper left', bbox_to_anchor=(1,1), ncol=1)plt.show()添加了上面的代碼來(lái)創(chuàng)建堆積圖。期望的輸出：對(duì)于低類(lèi)別，通過(guò)從列中提取值Value（100、50 和 50）在堆棧上添加注釋對(duì)于中值，值為 140、40 和 20。對(duì)于高值，值為 160、20 和 20。