我有用Python和Matplotlib制作的图形

Question

我有下面的代码来生成一个图形，其中x​​轴作为日期轴，2个y轴，一个用于MP-10，另一个用于我想要制作条形的设备。

date = ["2017-05-20 20:49","2017-05-20 20:50","2017-05-20 20:51","2017-05-20 20:52","2017-05-20 20:53","2017-05-20 20:54","2017-05-20 20:55",
       "2017-05-20 20:56","2017-05-20 20:57","2017-05-20 20:58","2017-05-20 20:59","2017-05-20 21:00","2017-05-20 21:01","2017-05-20 21:02",
       "2017-05-20 21:03","2017-05-20 21:04","2017-05-20 21:05","2017-05-20 21:06","2017-05-20 21:07","2017-05-20 21:08","2017-05-20 21:09",
       "2017-05-20 21:10","2017-05-20 21:11","2017-05-20 21:12","2017-05-20 21:13","2017-05-20 21:14","2017-05-20 21:15","2017-05-20 21:16",
       "2017-05-20 21:17","2017-05-20 21:18","2017-05-20 21:19","2017-05-20 21:20","2017-05-20 21:21","2017-05-20 21:22","2017-05-20 21:23"]
date = pd.to_datetime(date)
mp_10 = [502,507,514,521,528,533,539,544,548,551,553,554,555,555,555,554,553,552,551,551,550,548,547,545,543,541,538,534,530,525,520,515,510,506,501]
equipos = [11,11,11,16,18,19,21,24,24,25,25,25,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1] #35

df = pd.DataFrame({"fecha": date, "mp-10": mp_10, "totalEquipos": equipos})


## PLOT
sns.set(style='whitegrid', palette="deep", font_scale=1.1, rc={"figure.figsize": [8, 5]})
myFmt = mdates.DateFormatter("%H:%M")
fig, ax = plt.subplots(figsize=(15,8))
#PLot Line
plot_line = ax.plot(df.fecha, df['mp-10'], color='teal', marker='o')
ax.set_xlim(["2017-05-20 20:46", "2017-05-20 21:25"])
ax.set_xticklabels(df.fecha)
ax.set_ylim([0,700])
ax.set_xlabel("Hora: (20:49 - 21:23)", fontsize= 18)
ax.set_ylabel("MP-10 (ug/m3N)", color="teal", fontsize = 18)
ax.set_title("Peak 3 - MP-10 - Otoño - 20/05/2017", fontsize = 20)
ax.tick_params(axis='y', labelcolor="teal")
#Plot Bar
ax2 = ax.twinx()
plot_bar= ax2.bar(x = 'fecha', height = 'totalEquipos', data = df, color= 'purple', label='Total equipos', align = 'edge', linewidth= 4)
ax2.tick_params(axis='y', labelcolor= 'purple')
ax2.set_ylabel("Total equipos", color = 'purple', fontsize = 18)
ax2.set_ylim([0,40])
ax2.tick_params(axis='y')
#Legends
lns = plot_line + [plot_bar]
labs = [l.get_label() for l in lns]
ax.legend(lns, labs, loc='center', fontsize=15)
fig.tight_layout()
ax.xaxis.set_major_formatter(myFmt); 

该代码生成以下线形图和条形图：

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我的问题是，用蓝色标记的区域是其他区域，我不知道如何删除它。有没有人知道如何修复这个问题，以便正确显示图形？

另一张图显示了条形图应该遵循的正确的点。

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Answer 1

问题是条形图的默认宽度是0.8，所以你看到的紫色大矩形实际上是一个条形图。你可以玩它，这样你就可以有更小的条了：

plot_bar= ax2.bar(x = 'fecha', 
                  height = 'totalEquipos', 
                  data = df, color= 'purple', 
                  label='Total equipos', 
                  align = 'edge', width=0.0005)

提供：

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