def output_positions_info(self, output_path: str, tracer: Tracer):
"""
Outputs a `positions.info` file which summarizes the positions penalty term for a model fit, including:
- The arc second coordinates of the lensed source multiple images used for the model-fit.
- The radial distance of these coordinates from (0.0, 0.0).
- The threshold value used by the likelihood penalty.
- The maximum source plane seperation of the maximum likelihood tracer.
Parameters
----------
output_path
tracer
Returns
-------
"""
positions_fit = FitPositionsSourceMaxSeparation(
positions=self.positions, noise_map=None, tracer=tracer)
distances = positions_fit.positions.distances_to_coordinate_from(
coordinate=(0.0, 0.0))
with open_(path.join(output_path, "positions.info"), "w+") as f:
f.write(f"Positions: \n {self.positions} \n\n")
f.write(f"Radial Distance from (0.0, 0.0): \n {distances} \n\n")
f.write(f"Threshold = {self.threshold} \n")
f.write(
f"Max Source Plane Seperation of Maximum Likelihood Model = {positions_fit.max_separation_of_source_plane_positions}"
)
def _save_model_info(self, model):
"""
Save the model.info file, which summarizes every parameter and prior.
"""
with open_(path.join(self.output_path, "model.info"), "w+") as f:
f.write(f"Total Free Parameters = {model.prior_count} \n\n")
f.write(f"{model.parameterization} \n\n")
f.write(model.info)
def _save_metadata(self, search_name):
"""
Save metadata associated with the phase, such as the name of the pipeline, the
name of the phase and the name of the dataset being fit
"""
with open_(path.join(self.output_path, "metadata"), "a") as f:
f.write(f"""name={self.name}
non_linear_search={search_name}
""")
def save_object(self, name: str, obj: object):
"""
Serialise an object using dill and save it to the pickles
directory of the search.
Parameters
----------
name
The name of the object
obj
A serialisable object
"""
with open_(self._path_for_pickle(name), "wb") as f:
dill.dump(obj, f)
def load_object(self, name: str):
"""
Load a serialised object with the given name.
e.g. if the name is 'model' then pickles/model.pickle is loaded.
Parameters
----------
name
The name of a serialised object
Returns
-------
The deserialised object
"""
with open_(self._path_for_pickle(name), "rb") as f:
return dill.load(f)
def test__output_positions_info():
output_path = path.join(
"{}".format(os.path.dirname(os.path.realpath(__file__))), "files")
positions_likelihood = al.PositionsLHResample(positions=al.Grid2DIrregular(
[(1.0, 2.0), (3.0, 4.0)]),
threshold=0.1)
tracer = al.m.MockTracer(traced_grid_2d_list_from=al.Grid2DIrregular(
grid=[[(0.5, 1.5), (2.5, 3.5)]]))
positions_likelihood.output_positions_info(output_path=output_path,
tracer=tracer)
positions_file = path.join(output_path, "positions.info")
with open_(positions_file, "r") as f:
output = f.readlines()
assert "Positions" in output[0]
os.remove(positions_file)
def output_list_of_strings_to_file(file, list_of_strings):
with open_(file, "w") as f:
f.write("".join(list_of_strings))
def completed(self):
"""
Mark the search as complete by saving a file
"""
open_(self._has_completed_path, "w+").close()
def save_unique_tag(self, is_grid_search=False):
if is_grid_search:
with open_(self._grid_search_path, "w+") as f:
if self.unique_tag is not None:
f.write(self.unique_tag)
def save_parent_identifier(self):
if self.parent is not None:
with open_(self._parent_identifier_path, "w+") as f:
f.write(self.parent.identifier)
self.parent.save_unique_tag()
def load_samples_info(self):
with open_(self._info_file) as infile:
return json.load(infile)
def _save_search(self, config_dict):
with open_(path.join(self.output_path, "search.json"), "w+") as f:
json.dump(config_dict, f, indent=4)
def save_identifier(self):
with open_(f"{self._sym_path}/.identifier", "w+") as f:
f.write(
self._identifier.description
)
