def get_stay_points_v2(userid = 1,max_distence = 0.2, max_speed = 2, max_time=15*60):
print "Welcome"
#units :km
#userid = 0
gps_obj_list = dbutils.get_gps_record_time_order(userid, 0,-1)
stay_point_list = []
counts = len(gps_obj_list)
tmp_point_list = []
i =0
while i < counts :
j = i + 1
point_i =gps_obj_list[i]
k = 0
#del tmp_point_list[:]
tmp_point_list = []
tmp_point_list.insert(0, point_i)
while (j < counts) :
point_j = gps_obj_list[j]
euclidean_distence = base_op.get_distance(point_i, point_j)
t_diff = point_j.gps_UTC_unix_timestamp - point_i.gps_UTC_unix_timestamp
#print "distence = %f km" % euclidean_distence
k = k + 1
tmp_point_list.insert(k, point_j)
if t_diff > max_time :
#t_diff = point_j.gps_UTC_unix_timestamp - point_i.gps_UTC_unix_timestamp
meanSpeed = euclidean_distence / t_diff * 1000
#print "speed = %f m/s" % meanSpeed
#if t_diff > max_timethreshold:
if meanSpeed < max_speed:
#print "distence = %f km" % euclidean_distence
#print "speed = %f m/s" % meanSpeed
#print "time = %f s" % t_diff
tmp_point_list.pop();
s = stay_point.stay_point()
s.userid = userid
calc_mean_pos(s, tmp_point_list)
stay_point_list.append(s)
#dbutils.insert_staypoint(s)
i = j
break
else:
i = j
break;
j = j+1
if j == counts :
s = stay_point.stay_point()
s.userid = userid
calc_mean_pos(s, tmp_point_list)
stay_point_list.append(s)
#dbutils.insert_staypoint(s)
i = j
# break;
#for gps_record in gps_obj_list :
# gps_record.show()
#print "\n"
return stay_point_list
def get_stay_points(userid=1, max_distence=0.2, max_speed=2):
print "Welcome"
#units :km
#userid = 0
gps_obj_list = dbutils.get_gps_record_time_order(userid, 0, -1)
stay_point_list = []
counts = len(gps_obj_list)
tmp_point_list = []
i = 0
while i < counts:
j = i + 1
point_i = gps_obj_list[i]
k = 0
#del tmp_point_list[:]
tmp_point_list = []
tmp_point_list.insert(0, point_i)
while (j < counts):
point_j = gps_obj_list[j]
euclidean_distence = base_op.get_distance(point_i, point_j)
#print "distence = %f km" % euclidean_distence
k = k + 1
tmp_point_list.insert(k, point_j)
if euclidean_distence > max_distence:
t_diff = point_j.gps_UTC_unix_timestamp - point_i.gps_UTC_unix_timestamp
meanSpeed = euclidean_distence / t_diff * 1000
#print "speed = %f m/s" % meanSpeed
#if t_diff > max_timethreshold:
if meanSpeed < max_speed:
print "distence = %f km" % euclidean_distence
print "speed = %f m/s" % meanSpeed
print "time = %f s" % t_diff
tmp_point_list.pop()
s = stay_point.stay_point()
s.userid = userid
calc_mean_pos(s, tmp_point_list)
stay_point_list.append(s)
#dbutils.insert_staypoint(s)
i = j
break
else:
i = j
break
j = j + 1
if j == counts:
s = stay_point.stay_point()
s.userid = userid
calc_mean_pos(s, tmp_point_list)
stay_point_list.append(s)
dbutils.insert_staypoint(s)
i = j
# break;
#for gps_record in gps_obj_list :
# gps_record.show()
#print "\n"
return stay_point_list
def test():
log_init()
print "Welcome filter_points test"
i =0
errorCount = 0
beginPoint = getNextRecord(0)
beginPoint.show()
beginPoint.save("test.txt")
currentPoint = beginPoint
nextPoint = beginPoint
oneUserTotalNum = dbutils.get_record_total_num(0)
#dbutils.get_gps_record_time_order(0 , 0, oneUserTotalNum+1)
tmp = dbutils.get_gps_record_time_order(0 , oneUserTotalNum+2, 7)
if tmp :
print "error"
else :
print "empty"
def test():
log_init()
print "Welcome filter_points test"
i = 0
errorCount = 0
beginPoint = getNextRecord(0)
beginPoint.show()
beginPoint.save("test.txt")
currentPoint = beginPoint
nextPoint = beginPoint
oneUserTotalNum = dbutils.get_record_total_num(0)
#dbutils.get_gps_record_time_order(0 , 0, oneUserTotalNum+1)
tmp = dbutils.get_gps_record_time_order(0, oneUserTotalNum + 2, 7)
if tmp:
print "error"
else:
print "empty"
def getNextRecord(userId):
global currentRecordList
global currentIndex
if (not currentRecordList.gps_list) or (currentRecordList.currentPos == \
len(currentRecordList.gps_list)) :
currentRecordList.gps_list = \
dbutils.get_gps_record_time_order(userId, currentIndex, 20000)
if (not currentRecordList.gps_list) :
currentIndex = 0
currentRecordList.gps_list = None
raise ValueError,'no more gps record'
return None
currentRecordList.currentPos = 0
res = currentRecordList.gps_list[currentRecordList.currentPos]
currentIndex += 1
currentRecordList.currentPos += 1
return res
def getNextRecord(userId):
global currentRecordList
global currentIndex
if (not currentRecordList.gps_list) or (currentRecordList.currentPos == \
len(currentRecordList.gps_list)) :
currentRecordList.gps_list = \
dbutils.get_gps_record_time_order(userId, currentIndex, 20000)
if (not currentRecordList.gps_list):
currentIndex = 0
currentRecordList.gps_list = None
raise ValueError, 'no more gps record'
return None
currentRecordList.currentPos = 0
res = currentRecordList.gps_list[currentRecordList.currentPos]
currentIndex += 1
currentRecordList.currentPos += 1
return res
def main():
userid = 128
gps_obj_list = dbutils.get_gps_record_time_order(userid, 0, -1)
dbutils.close_db()
print "next"
dirName = "%d_points_dir_baidu_pos" % userid
if not os.path.exists(dirName):
os.mkdir(dirName)
distPointList = []
i = 0
j = 0
for p in chunks(gps_obj_list, 100):
i = i + 1
distPointList += convert_coordinate.convert_coordinate_post(p)
if i >= 1000:
savePointsToJson(userid, j, distPointList)
distPointList = []
j = j + 1
i = 0
savePointsToJson(userid, j, distPointList)
def main():
userid = 128
gps_obj_list = dbutils.get_gps_record_time_order(userid, 0,-1)
dbutils.close_db();
print "next"
dirName = "%d_points_dir_baidu_pos" %userid
if not os.path.exists(dirName):
os.mkdir(dirName)
distPointList = []
i = 0
j = 0
for p in chunks (gps_obj_list,100):
i = i + 1
distPointList += convert_coordinate.convert_coordinate_post(p)
if i >=1000:
savePointsToJson(userid, j, distPointList)
distPointList = []
j = j + 1
i = 0
savePointsToJson(userid, j, distPointList)
