小编sig*_*sco的帖子

我正在尝试使用节点js在mongodb中的两个集合之间进行查询.

我在db中有这两个集合:

旅

{               
    "_id":ObjectId("55a922531e35772c1b17d4a0"),
    "name":"trip_name",
    "waypoints":[
        "4c828999d8086dcb03877752",
        "4dd2ae657d8b4c6585f1a6fd",
        "4c59c3e4f346c928a8634dca"
    ],
    "line_points":[
        [
            42.850937,
            13.569256
        ],
        [
            42.85109,
            13.569377
        ],
        [
            42.851131,
            13.569225
        ]
    ],
    "time":"00:10:23",
    "distance":6.622,
    "hashKey":"object:8207"
};

POI

{  
      "_id":"4c828999d8086dcb03877752",
      "type":"Feature",
      "geometry":{  
         "type":"Point",
         "coordinates":[  
            13.575249910354614,
            42.85484995890166
         ]
      },
      "properties":{  
         "title":"Lorenz Cafè",
         "id":"4c828999d8086dcb03877752",
         "poi-type":1,
         "category":"ristorazione",
         "subCategory":"Café",
         "categoryIds":"4bf58dd8d48988d16d941735",
         "marker-color":"#FF7519",
         "marker-size":"small",
         "marker-symbol":"restaurant",
         "indirizzo":"Piazza del Popolo, 5",
         "citta":"Ascoli Piceno",
         "regione":"Marche"
      }

通过这条路线,我根据id那个步骤进行查询,我希望查询我会像这样恢复一个json:

我想要的结果

{"_id":"55a922531e35772c1b17d4a0","name":"trip_name","waypoints":[{"4c828999d8086dcb03877752":{"title":"Lorenz Cafè","id":"4c828999d8086dcb03877752","category":"ristorazione","position":{"lat":42.85484995890166,"lng":13.575249910354614}}},{"4dd2ae657d8b4c6585f1a6fd":{"title":"Ottica Di Ferdinando","id":"4dd2ae657d8b4c6585f1a6fd","category":"negozi","position":{"lat":42.85485741498569,"lng":13.57675423240643}}},{"4c59c3e4f346c928a8634dca":{"title":"Leopoldus Ristorante","id":"4c59c3e4f346c928a8634dca","category":"ristorazione","position":{"lat":42.85648980743132,"lng":13.575512766838072}}}],"line_points":[[42.850937,13.569256],[42.85109,13.569377],[42.851131,13.569225]],"time":"00:10:23","distance":6.622}

我实现了这条路线:

/*
TRIP BY ID
 */
var j=0;
router.get('/:id', function(req, res) { …

我想在同一情节中多个堆叠的酒吧。这是我的代码：

    file_to_plot = file_to_plot.set_index(['user'])
    fig, ax = plt.subplots()
    fontP = FontProperties()
    fontP.set_size('small')
    file_to_plot[[" mean_accuracy_all_classes_normal", " delta_all_classes"]].plot(ax=ax, kind='bar', color= ['g', 'r'], width = 0.65, align="center", stacked=True)
    file_to_plot[[" mean_accuracy_user_classes_normal", " delta_user_classes"]].plot(ax=ax, kind='bar', color=['y', 'b'], width=0.65, align="center", stacked = True)
    lgd = ax.legend(['Tutte le classi (normale)', 'Tutte le classi (incrementale)', 'Classi utente (normale)', 'Classi utente (incrementale)'], prop=fontP, loc=9, bbox_to_anchor=(0.5, -0.15), ncol=4,borderaxespad=0.)
    ax.set_ylabel('% Accuratezza')
    ax.set_xlabel('Utenti')

结果如下：

当我想将它们绘制在一起时，第二个图使我不知所措。我能怎么做？