def test_step_one_infected_unity_rate_infects_other(self):
self.two_in_contact[0].infected = True
propagator = Propagator(self.two_in_contact, rate=1.0)
propagator.step()
self.assertTrue(self.two_in_contact[1].infected)
def test_results_has_length_of_steps_with_three_steps(self):
propagator = Propagator(self.two_in_contact)
n_steps = 3
propagator.step_n(n_steps)
self.assertEqual(n_steps, len(propagator.results.day))
def test_results_days_are_consecutive_for_four_days(self):
propagator = Propagator(self.two_in_contact)
n_steps = 4
propagator.step_n(n_steps)
self.assertEqual([0, 1, 2, 3], propagator.results.day)
def test_step_with_two_in_contact_and_zero_rate_does_nothing(self):
propagator = Propagator(self.two_in_contact, rate=0.0)
propagator.step()
self.assertFalse(self.two_in_contact[0].infected)
self.assertFalse(self.two_in_contact[1].infected)
def test_recovered_do_not_get_reinfected(self):
self.two_in_contact[0].infected = True
propagator = Propagator(self.two_in_contact, rate=1.0, infection_length=1)
propagator.step_n(2)
self.assertFalse(self.two_in_contact[0].infected)
def test_not_infected_with_mortality_1_dont_die(self):
person = Person()
propagator = Propagator([person], daily_mortality=1.0)
propagator.step()
self.assertFalse(person.dead)
def make_primitive_helper(*cells):
inputs, output = cells[:-1], cells[-1]
lifted_f = _lift_to_cell_contents(f)
def to_do():
output.add_content(lifted_f(*[c.content for c in inputs]))
return Propagator(inputs, to_do)
def test_results_recovered_count_recovered(self):
self.two_in_contact[0].infected = True
propagator = Propagator(self.two_in_contact, infection_length=1, daily_mortality=0)
propagator.step_n(2)
self.assertEqual([0, 1], propagator.results.recovered_count)
def test_none_in_contact_do_not_infect(self):
people = [Person(), Person()]
people[0].infected = True
propagator = Propagator(people, rate=1.0)
propagator.step()
self.assertFalse(people[1].infected)
def test_all_infected_die_with_mortality_1(self):
person = Person()
person.infected = True
propagator = Propagator([person], daily_mortality=1.0)
propagator.step()
self.assertTrue(person.dead)
def test_infected_given_infection_length_3_is_still_infected_after_2_steps(self):
infected_person = Person()
infected_person.infected = True
propagator = Propagator([infected_person], infection_length=3)
propagator.step_n(2)
self.assertTrue(infected_person.infected)
def test_infected_recover_after_infection_length_steps_of_2(self):
infected_person = Person()
infected_person.infected = True
propagator = Propagator([infected_person], infection_length=2)
propagator.step_n(2)
self.assertFalse(infected_person.infected)
def test_step_half_rate_infects_other_with_rng_zero(self, mock_random):
mock_random.return_value = 0.0
self.two_in_contact[0].infected = True
propagator = Propagator(self.two_in_contact, rate=0.5)
propagator.step()
self.assertTrue(self.two_in_contact[1].infected)
def test_results_dead_count_dead(self):
self.two_in_contact[0].infected = True
self.two_in_contact[1].dead = True
propagator = Propagator(self.two_in_contact, infection_length=10, daily_mortality=1.0)
propagator.step_n(2)
self.assertEqual([1, 2], propagator.results.dead_count)
def test_those_that_die_do_not_recover(self, mock_random):
mock_random.return_value = 0.0
person = Person()
person.infected = True
propagator = Propagator([person], daily_mortality=1.0, infection_length=1)
propagator.step()
self.assertFalse(person.recovered)
def test_the_dead_do_not_infect(self, mock_random):
mock_random.return_value = 0.0
self.two_in_contact[0].dead = True
self.two_in_contact[0].infected = True
propagator = Propagator(self.two_in_contact, daily_mortality=1.0, rate=1.0)
propagator.step()
self.assertFalse(self.two_in_contact[1].infected)
def test_results_infected_count_infected(self):
self.two_in_contact[0].infected = True
self.two_in_contact[1].infected = True
propagator = Propagator(self.two_in_contact, infection_length=1)
propagator.step_n(2)
self.assertEqual([2, 0], propagator.results.infected_count)
def test_all_infected_die_with_mortality_one_tenth_and_rng_0(self, mock_random):
mock_random.return_value = 0.0
person = Person()
person.infected = True
propagator = Propagator([person], daily_mortality=0.1)
propagator.step()
self.assertTrue(person.dead)
def test_those_that_die_are_not_considered_infected(self, mock_random):
mock_random.return_value = 0.0
person = Person()
person.infected = True
propagator = Propagator([person], daily_mortality=1.0)
propagator.step()
self.assertFalse(person.infected)
def conditional(p, if_true, if_false, output):
def conditional_helper():
if p.content is not None:
if p.content:
output.add_content(if_true.content)
else:
output.add_content(if_false.content)
return Propagator([p, if_true, if_false], conditional_helper)
def new_propagator_appends_function_to_neighbors(self):
a = Cell()
b = Cell()
c = Cell()
f = lambda x: x
Propagator([a, b, c], f)
for cell in [a, b, c]:
self.assertEqual(cell.neighbors, [f])
def propagate():
action_help = """
Actions
========
info : print all info about the spacecraft
get_all : get all data and return as a csv
get_pass : quickly find upcoming pass(es)
compute : compute pass details
Ground station specification
============================
The ground station can be specified with the --gslat, --gslon, --gselev params,
or alternatively by a simple text file with those three fields separated by comma.
The file should either be called gs.txt or specified with --gs.
Examples
========
$ libgs-propagate info
Print info about current state of spacecraft described by TLE. Get TLE from stdin
$ libgs-propagate -i tles.txt -w "2018-01-01 10:00" "2018-01-01 10:05" "2018-01-01 10:10" get_all
Compute everything we can about the tles at the times specified and return a CSV
$ libgs-propagate -i tles.txt -N 10 get_pass
Get overview of next 10 passes and return a CSV
$ libgs-propagate -i tles.txt --nid 25440 compute
Compute upcoming pass for TLE 25440 and return a CSV with same fields as get_all
"""
parser = argparse.ArgumentParser(
formatter_class=argparse.RawDescriptionHelpFormatter,
description='Propagate a TLE',
epilog=action_help)
parser.add_argument(
"-i",
"--input",
help="Input file with TLE(s). Omit to get TLE(s) from stdin")
parser.add_argument(
"-n",
"--nid",
type=int,
nargs="*",
help=
"Norad ID(s) of TLE(s) to propagate. If omitted does all provided TLEs"
)
parser.add_argument("-w",
"--when",
type=str,
nargs="*",
help="Timestamps at which to propegate. Default=now")
parser.add_argument("--gslat",
type=float,
help="Ground station latitiude (overrides --gs)")
parser.add_argument("--gslon",
type=float,
help="Ground station longitude (overrides --gs)")
parser.add_argument("--gselev",
type=float,
help="Ground station elevation (overrides --gs)")
parser.add_argument(
"-g",
"--gs",
type=str,
default="gs.txt",
help="Ground station specification file (use instead of gslat/lon/elev)"
)
parser.add_argument("-H",
"--horizon",
type=float,
default=5,
help="Visibility horizon")
parser.add_argument(
"-N",
type=int,
default=1,
help="(Only with get_pass action) Number of passes to get")
parser.add_argument(
"--dt",
type=int,
help="(Only with compute action) Time interval to compute data at")
parser.add_argument("action",
choices=["info", "get_all", "get_pass", "compute"],
help="Action to take")
parser.add_argument("-p",
"--print",
action="store_true",
help="Pretty print output")
parser.add_argument("-f",
"--field",
nargs="+",
help="Filter output by one or more fields")
parser.add_argument("--no-header",
action="store_true",
help="Dont output csv header")
args = parser.parse_args()
if args.input is not None:
try:
with open(args.input, "r") as fp:
tles = fp.read()
except Exception as e:
_print("ERROR: Could not read file {}".format(args.input))
exit(1)
else:
_print("Enter TLE(s). EOF (Ctrl-D) to finish")
tles = sys.stdin.read()
tles = tles.strip()
if (args.gslat is not None and args.gslon is not None
and args.gselev is not None):
pass
elif args.gs is not None:
try:
with open(args.gs, "r") as fp:
gslat, gslon, gselev = [float(x) for x in fp.read().split(',')]
except Exception as e:
_print(
"ERROR: Could not parse groundstation definition file. Message ({}): {}"
.format(e.__class__.__name__, e))
exit(1)
else:
_print(
"ERROR: Ground station location needs to be defined (either with --gslat/--gslon/--gselev or wiht --gs file)"
)
exit(1)
if args.gslat is not None:
gslat = args.gslat
if args.gslon is not None:
gslon = args.gslon
if args.gselev is not None:
gselev = args.gselev
try:
p = Propagator(tles=tles, gs_lat=gslat, gs_lon=gslon, gs_elev=gselev)
except Exception as e:
_print("ERROR: Could not create Propagator. Message ({}): {}".format(
e.__class__.__name__, e))
raise
exit(1)
if args.nid is None:
nids = p.nids_to_track
# # try to extract NIDs from tle string
# raw_tles = tles.replace('\r', '').split('\n')
# raw_tles = [rtle.strip() for rtle in raw_tles]
#
# # do a tiny bit of error checking and extract nids
#
# if (not all([x[0] == '0' for x in raw_tles[0::3]])) or\
# (not all([x[0] == '1' for x in raw_tles[1::3]])) or\
# (not all([x[0] == '2' for x in raw_tles[2::3]])) :
# _print("ERROR: Malformed TLE string")
# exit(1)
#
# nids = [int(x.split(' ')[1]) for x in raw_tles[2::3]]
else:
nids = args.nid
if len(nids) < 1:
_print("ERROR: No valid TLEs and/or no NIDs. Dont know what to do")
exit(1)
if args.action == 'info':
try:
for nid in nids:
for w in [None] if args.when is None else args.when:
p.print_info(nid=nid, when=_fix_timestamp(w))
except Exception as e:
_print("ERROR: action info. Message ({}):{}".format(
e.__class__.__name__, e))
exit(1)
exit(0)
elif args.action == 'get_all':
if len(nids) > 1:
_print(
"ERROR: get_all action only works with a single NID, you have specified {}"
.format(nids))
exit(1)
try:
when = [_fix_timestamp(w) for w in args.when]
data = p.get_all(nid=nids[0], when=when)
data.tstamp_str = data.tstamp_str.apply(_rev_timestamp)
if isinstance(data, pd.Series):
data = pd.DataFrame(data).transpose()
except Exception as e:
_print("ERROR: action get_all. Message ({}):{}".format(
e.__class__.__name__, e))
exit(1)
elif args.action == 'get_pass':
try:
if args.when is not None and len(args.when) != 1:
_print(
"ERROR: get_pass requires when to be a single date. Use -N if you want to compute multiple passes"
)
exit(1)
data = p.get_passes(nid=nids,
when=_fix_timestamp(args.when[0])
if args.when is not None else None,
N=args.N,
horizon=args.horizon)
if isinstance(data, pd.Series):
data = pd.DataFrame(data).transpose()
data.index.name = "pass_no"
data.rise_t = data.rise_t.apply(_rev_timestamp)
data.max_elev_t = data.max_elev_t.apply(_rev_timestamp)
data.set_t = data.set_t.apply(_rev_timestamp)
except Exception as e:
_print("ERROR: action get_pass. Message ({}):{}".format(
e.__class__.__name__, e))
exit(1)
elif args.action == 'compute':
if len(nids) > 1:
_print(
"ERROR: compute action only works with a single NID, you have specified {}"
.format(nids))
exit(1)
if args.when is not None:
if len(args.when) != 1:
_print("ERROR: action compute. When must be a single value")
exit(1)
else:
when = _fix_timestamp(args.when[0])
else:
when = None
try:
data, psum = p.compute_pass(nid=nids[0], when=when, dt=args.dt)
data.tstamp_str = data.tstamp_str.apply(_rev_timestamp)
except Exception as e:
_print("ERROR: action compute. Message ({}):{}".format(
e.__class__.__name__, e))
exit(1)
else:
_print("ERROR: Invalid action {}".format(args.action))
exit(1)
data = data.reset_index()
if args.field is not None:
try:
data = data.loc[:, args.field]
except Exception as e:
_print("ERROR: Could not filter by {}. Message ({}):{}".format(
args.field, e.__class__.__name__, e))
exit(1)
if args.print:
print(data)
else:
print(data.to_csv(index=False, header=not args.no_header))
exit(0)
def __init__(self, grid_size, sample, pattern_size):
self.patterns = Pattern.from_sample(sample, pattern_size)
self.grid = self._create_grid(grid_size)
self.propagator = Propagator(self.patterns)
def test_results_has_length_of_steps_with_one_step(self):
propagator = Propagator(self.two_in_contact)
propagator.step()
self.assertEqual(1, len(propagator.results.day))