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 getSpeed(currentPoint, nextPoint):
euclidean_distence = base_op.get_distance(currentPoint, nextPoint)
#print "distence = %f km" % euclidean_distence
time_tmp = nextPoint.gps_UTC_unix_timestamp - currentPoint.gps_UTC_unix_timestamp
try :
speedVal = euclidean_distence*3600/abs(time_tmp)
except ZeroDivisionError:
raise
return speedVal
def getSpeed(currentPoint, nextPoint):
euclidean_distence = base_op.get_distance(currentPoint, nextPoint)
#print "distence = %f km" % euclidean_distence
time_tmp = nextPoint.gps_UTC_unix_timestamp - currentPoint.gps_UTC_unix_timestamp
try:
speedVal = euclidean_distence * 3600 / abs(time_tmp)
except ZeroDivisionError:
raise
return speedVal
