minor changes

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