minor changes

sensors/radio/model/LogDistanceModel.h

@@ -18,6 +18,18 @@ public:
 		return (txPower - (10 * pathLoss * std::log10(distance_m)));
 	}
 
+//	static float distanceAndRssiToPathLoss(const float txPower, const float rssi, const float distance_m) {
+//		const float delta = txPower - rssi;
+//		const float log = std::log10(distance_m) * 10.0f;
+//		const float res = delta/log;
+
+//		// sanity check
+//		const float err = std::abs(rssi - distanceToRssi(txPower, res, distance_m));
+//		if (err > 0.01) {throw Exception("error too high!");}
+
+//		return res;
+//	}
+
 };
 
 #include <vector>

sensors/radio/model/WiFiModelLogDist.h

@@ -55,6 +55,17 @@ public:
 
 	}
 
+	/** does the model know the given AP? */
+	bool knowsAP(const MACAddress& accessPoint) {
+
+		// try to get the corresponding parameters
+		const auto it = accessPoints.find(accessPoint);
+
+		// AP known?
+		return (it != accessPoints.end());
+
+	}
+
 	virtual float getRSSI(const MACAddress& accessPoint, const Point3 position_m) const override {
 
 		// try to get the corresponding parameters

sensors/radio/model/WiFiModelLogDistCeiling.h

@@ -107,6 +107,17 @@ public:
 		accessPoints.clear();
 	}
 
+	/** does the model know the given AP? */
+	bool knowsAP(const MACAddress& accessPoint) {
+
+		// try to get the corresponding parameters
+		const auto it = accessPoints.find(accessPoint);
+
+		// AP known?
+		return (it != accessPoints.end());
+
+	}
+
 	float getRSSI(const MACAddress& accessPoint, const Point3 position_m) const override {
 
 		// try to get the corresponding parameters