小数处理 暂无精度要求 avg可用

controller/statisticsController.js

@@ -54,6 +54,13 @@ async function getSMCChangeTrend(req, res, next) {
                     // soilPH: { $avg: "$soilPH" },
                 }
             },
+            {$project: {
+                soilTemperature: {$round: ["$soilTemperature", 2]},
+                soilMoisture: {$round: ["$soilMoisture", 2]},
+                nitrogen: {$round: ["$nitrogen", 2]},
+                phosphorus: {$round: ["$phosphorus", 2]},
+                potassium: {$round: ["$potassium", 2]},
+            }},
             { $sort: { _id: 1 } }
 
         ];
@@ -79,6 +86,10 @@ async function getSMCChangeTrend(req, res, next) {
                     soilConductivity: { $avg: "$soilConductivity" },
                 }
             },
+            {$project: {
+                soilPH: {$round: ["$soilPH", 2]},
+                soilConductivity: {$round: ["$soilConductivity", 2]},
+            }},
             { $sort: { _id: 1 } }
 
         ];
@@ -281,7 +292,12 @@ async function getAreaDistribution(req, res, next) {
                     latestYield: { $sum: "$latestYield" },
                     latestYieldValue: { $sum: "$latestYieldValue" },
                 }
-            }
+            },
+            {$project: {
+                area: {$round: ["$area", 2]},
+                latestYield: {$round: ["$latestYield", 2]},
+                latestYieldValue: {$round: ["$latestYieldValue", 2]},
+            }},
         ]);
         let totalArea = _.sumBy(lands, 'area');
         let totalYield = _.sumBy(lands, 'latestYield');