private void queryNearestDistance(int rssi[]) {
Log.i(TAG, "queryNearestDistance BEGIN");
WifiReferencePointProxy proxy = new WifiReferencePointProxy(act);
proxy.initDB();
ArrayList<HashMap> list = new ArrayList<HashMap>();
// list = proxy.queryReferencePointDis(mApScanRssi);
list = proxy.queryReferencePointDis(scanDataList);
// list = proxy.getRegularCoodinate();
Collections.sort(
list,
new Comparator<HashMap>() {
@Override
public int compare(HashMap lhs, HashMap rhs) {
// TODO Auto-generated method stub
return (Integer) rhs.get(WifiReferencePointVO.DISTANCE)
== (Integer) lhs.get(WifiReferencePointVO.DISTANCE)
? 0
: ((Integer) rhs.get(WifiReferencePointVO.DISTANCE)
< (Integer) lhs.get(WifiReferencePointVO.DISTANCE)
? 1
: -1);
// return (Integer) rhs.get(WifiReferencePointVO.DISTANCE) < (Integer) lhs
// .get(WifiReferencePointVO.DISTANCE) ? 1 : -1;
}
});
/*
int knnSample = 3;
double mPosibility = -1;
int knnNo = 0;
for(int i = 0; i < knnSample; i++) {
BayesClassifier bayes = new BayesClassifier(list.get(i), scanDataList);
double res = bayes.getLocationPosibility();
if(res > mPosibility) {
mPosibility = res;
knnNo = i;
}
}
Log.i(TAG, "The most suitable knn is no" +knnNo + ", Pos = "+mPosibility);
*/
// using Bayes algorithm to get positionX, Y
/*
float newPositionX = Float.parseFloat((String) list.get(knnNo).get(WifiReferencePointVO.POSITION_X));
float newPositionY = Float.parseFloat((String) list.get(knnNo).get(WifiReferencePointVO.POSITION_Y));
*/
// using knn algorithm to get positionX, Y
float newPositionX =
(Float.parseFloat((String) list.get(0).get(WifiReferencePointVO.POSITION_X))
+ Float.parseFloat((String) list.get(1).get(WifiReferencePointVO.POSITION_X))
+ Float.parseFloat((String) list.get(2).get(WifiReferencePointVO.POSITION_X)))
/ 3;
float newPositionY =
(Float.parseFloat((String) list.get(0).get(WifiReferencePointVO.POSITION_Y))
+ Float.parseFloat((String) list.get(1).get(WifiReferencePointVO.POSITION_Y))
+ Float.parseFloat((String) list.get(2).get(WifiReferencePointVO.POSITION_Y)))
/ 3;
WifiReferencePointVO.lastPosX = newPositionX;
WifiReferencePointVO.lastPosY = newPositionY;
double x0_x1 =
Math.pow(
Float.parseFloat((String) list.get(0).get(WifiReferencePointVO.POSITION_X))
- Float.parseFloat((String) list.get(1).get(WifiReferencePointVO.POSITION_X)),
2);
double y0_y1 =
Math.pow(
Float.parseFloat((String) list.get(0).get(WifiReferencePointVO.POSITION_Y))
- Float.parseFloat((String) list.get(1).get(WifiReferencePointVO.POSITION_Y)),
2);
double x1_x2 =
Math.pow(
Float.parseFloat((String) list.get(1).get(WifiReferencePointVO.POSITION_X))
- Float.parseFloat((String) list.get(2).get(WifiReferencePointVO.POSITION_X)),
2);
double y1_y2 =
Math.pow(
Float.parseFloat((String) list.get(1).get(WifiReferencePointVO.POSITION_Y))
- Float.parseFloat((String) list.get(2).get(WifiReferencePointVO.POSITION_Y)),
2);
double x2_x0 =
Math.pow(
Float.parseFloat((String) list.get(2).get(WifiReferencePointVO.POSITION_X))
- Float.parseFloat((String) list.get(0).get(WifiReferencePointVO.POSITION_X)),
2);
double y2_y0 =
Math.pow(
Float.parseFloat((String) list.get(2).get(WifiReferencePointVO.POSITION_Y))
- Float.parseFloat((String) list.get(0).get(WifiReferencePointVO.POSITION_Y)),
2);
Log.i(
TAG,
"x0_x1 = "
+ x0_x1
+ " y0_y1 = "
+ y0_y1
+ " x1_x2 = "
+ x1_x2
+ " y1_y2 = "
+ y1_y2
+ " x2_x0 = "
+ x2_x0
+ " y2_y0 ="
+ y2_y0);
double e1 = Math.sqrt(x0_x1 + y0_y1);
double e2 = Math.sqrt(x1_x2 + y1_y2);
double e3 = Math.sqrt(x2_x0 + y2_y0);
String edges = "The Edge E1 = " + e1 + " E2 = " + e2 + " E3 = " + e3;
String res = "The 1st Nearest posX = " + newPositionX + " posY = " + newPositionY;
String mOnLine = (String) list.get(0).get(WifiReferencePointVO.PATH_NUMBER);
Log.i(TAG, "" + res);
Log.i(TAG, "on Line: " + mOnLine);
act.setCurrentLocation(newPositionX, newPositionY, rssi);
}
private void setTestingData(int rssi[]) {
// TODO Auto-generated method stub
Log.i(TAG, "setTestingData BEGIN");
testingModeScanCount++;
currentScanCount = 0;
TestingModeProxy tmProxy = new TestingModeProxy(act);
tmProxy.initDB();
WifiReferencePointProxy proxy = new WifiReferencePointProxy(act);
proxy.initDB();
ArrayList<HashMap> list = new ArrayList<HashMap>();
list = proxy.queryReferencePointDis(scanDataList);
Collections.sort(
list,
new Comparator<HashMap>() {
@Override
public int compare(HashMap lhs, HashMap rhs) {
// TODO Auto-generated method stub
return (Integer) rhs.get(WifiReferencePointVO.DISTANCE)
== (Integer) lhs.get(WifiReferencePointVO.DISTANCE)
? 0
: ((Integer) rhs.get(WifiReferencePointVO.DISTANCE)
< (Integer) lhs.get(WifiReferencePointVO.DISTANCE)
? 1
: -1);
}
});
float newPositionX =
(Float.parseFloat((String) list.get(0).get(WifiReferencePointVO.POSITION_X))
+ Float.parseFloat((String) list.get(1).get(WifiReferencePointVO.POSITION_X))
+ Float.parseFloat((String) list.get(2).get(WifiReferencePointVO.POSITION_X)))
/ 3;
float newPositionY =
(Float.parseFloat((String) list.get(0).get(WifiReferencePointVO.POSITION_Y))
+ Float.parseFloat((String) list.get(1).get(WifiReferencePointVO.POSITION_Y))
+ Float.parseFloat((String) list.get(2).get(WifiReferencePointVO.POSITION_Y)))
/ 3;
float dis =
(float)
Math.sqrt(
(Math.pow((newPositionX - WifiReferencePointVO.lastPosX), 2)
+ (Math.pow((newPositionY - WifiReferencePointVO.lastPosY), 2))));
Log.i(TAG, "Distance between last and current point = " + dis);
TestingModeVO tmVO = new TestingModeVO();
tmVO.mPosX = Float.toString(newPositionX);
tmVO.mPosY = Float.toString(newPositionY);
tmVO.mDis = Float.toString(dis);
if (dis > maxDistance2M) {
tmVO.mPosJump2M = "Y";
} else tmVO.mPosJump2M = "N";
if (dis > maxDistance3M) {
tmVO.mPosJump3M = "Y";
} else tmVO.mPosJump3M = "N";
tmProxy.setTestingData(tmVO);
if (testingModeScanCount >= maxTestCount) {
tmProxy.closeDbAndCursor();
getTestingModeRes();
act.finishTestingMode(outOfDistanceCount2M, outOfDistanceCount3M);
} else {
act.wiFiManager.startScan();
}
}