Package mosp :: Package external_persons :: Module external_data_manager :: Class ConnectionService

Class ConnectionService

Instance Methods

__init__(self, address, port, conn, map_path, free_move_only, hmac_key)
x.__init__(...) initializes x; see help(type(x)) for signature

source code

dummylocation(self, id='', lat='', lon='', acc='', speed='', bearing='')

source code

location(self, id='', lat='', lon='', acc='', hmac='')
Handle incoming location from $HOSTNAME:$PORT/location?$PARAMS.

source code

add_match(self, time, id, x, y, acc, way_segment)
Add a new set of values to the known locations and remove an old one if necessary.

source code

fuzzy_map_match(self, id, x, y, acc, time)
Match the received coordinates to the OSM-map using fuzzy logic.

source code

initial_fuzzy_match(self, x, y, previous_x, previous_y, acc, candidates=None)
Perform initial map match based on fuzzy logic using the peach package.

source code

subsequent_fuzzy_match(self, x, y, acc, segment, id)
Perform subsequent matching along the identified segment and check for transition into new segment.

source code

calculate_angle(self, start1, end1, start2, end2)
Calculate the angle between two lines identified by start and end points.

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Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, address, port, conn, map_path, free_move_only, hmac_key)
(Constructor)

source code

x.__init__(...) initializes x; see help(type(x)) for signature

Overrides: object.__init__: (inherited documentation)

dummylocation(self, id='', lat='', lon='', acc='', speed='', bearing='')

source code

Decorators:

@expose

location(self, id='', lat='', lon='', acc='', hmac='')

source code

Handle incoming location from $HOSTNAME:$PORT/location?$PARAMS.

Decorators:

@expose

add_match(self, time, id, x, y, acc, way_segment)

source code

Add a new set of values to the known locations and remove an old one if necessary.

Parameters:

time - Timestamp of receive-time
id - id of the person
x - x coordinate of received location
y - y coordinate of received location
acc - accuracy of received location
way_segment - the current way segment the person was matched to

fuzzy_map_match(self, id, x, y, acc, time)

source code

Match the received coordinates to the OSM-map using fuzzy logic.

Algorithm is based on http://d-scholarship.pitt.edu/11787/4/Ren,_Ming_Dissertation.pdf (Chapter 4.3)

Parameters:

id - id of the person
x - x coordinate of received location
y - y coordinate of received location
acc - accuracy of received location
time - timestamp of receival

Returns:

a list with format [person_id, node_id_start, node_id_end, matched_x, matched_y, time_received] or None if no match was found

initial_fuzzy_match(self, x, y, previous_x, previous_y, acc, candidates=None)

source code

Perform initial map match based on fuzzy logic using the peach package.

Parameters:

x - x coordinate of received location
y - y coordinate of received location
previous_x - x coordinate of last received location
previous_y - y coordinate of last received location
acc - accuracy of received location
candidates - an iterable containing a set of predefined candidate segments (default is None)

Returns:

a tuple containing (identified segment, matched x, matched y)

subsequent_fuzzy_match(self, x, y, acc, segment, id)

source code

Perform subsequent matching along the identified segment and check for transition into new segment.

Parameters:

x - x coordinate of received location
y - y coordinate of received location
acc - accuracy of received location
segment - the way segment the person is currently moving on

Returns:

a tuple containing (identified segment, matched x, matched y)

calculate_angle(self, start1, end1, start2, end2)

source code

Calculate the angle between two lines identified by start and end points.

Parameters:

start1 (tuple (x, y)) - starting point of line one
end1 (tuple (x, y)) - ending point of line one
start2 (tuple (x, y)) - starting point of line two
end2 (tuple (x, y)) - ending point of line two

Returns:

angle in degrees as integer

Class ConnectionService

__init__(self, address, port, conn, map_path, free_move_only, hmac_key) (Constructor)

dummylocation(self, id='', lat='', lon='', acc='', speed='', bearing='')

location(self, id='', lat='', lon='', acc='', hmac='')

add_match(self, time, id, x, y, acc, way_segment)

fuzzy_map_match(self, id, x, y, acc, time)

initial_fuzzy_match(self, x, y, previous_x, previous_y, acc, candidates=None)

subsequent_fuzzy_match(self, x, y, acc, segment, id)

calculate_angle(self, start1, end1, start2, end2)

init(self, address, port, conn, map_path, free_move_only, hmac_key)
(Constructor)