diff options
Diffstat (limited to 'fg21sim')
| -rw-r--r-- | fg21sim/galactic/synchrotron.py | 116 |
1 files changed, 75 insertions, 41 deletions
diff --git a/fg21sim/galactic/synchrotron.py b/fg21sim/galactic/synchrotron.py index a5e8b57..77c0be4 100644 --- a/fg21sim/galactic/synchrotron.py +++ b/fg21sim/galactic/synchrotron.py @@ -39,37 +39,32 @@ class Synchrotron: ---------- ??? """ + # Component name + name = "Galactic free-free" + def __init__(self, configs): self.configs = configs self._set_configs() - self._load_template() - self._load_indexmap() def _set_configs(self): """Load the configs and set the corresponding class attributes.""" - self.template_path = self.configs.get_path( - "galactic/synchrotron/template") - self.template_freq = self.configs.getn( - "galactic/synchrotron/template_freq") + comp = "galactic/freefree" + self.template_path = self.configs.get_path(comp+"/template") + self.template_freq = self.configs.getn(comp+"/template_freq") self.template_unit = au.Unit( - self.configs.getn("galactic/synchrotron/template_unit")) - self.indexmap_path = self.configs.get_path( - "galactic/synchrotron/indexmap") - self.smallscales = self.configs.getn( - "galactic/synchrotron/add_smallscales") + self.configs.getn(comp+"/template_unit")) + self.indexmap_path = self.configs.get_path(comp+"/indexmap") + self.smallscales = self.configs.getn(comp+"/add_smallscales") + self.prefix = self.configs.getn(comp+"/prefix") + self.save = self.configs.getn(comp+"/save") + self.output_dir = self.configs.get_path(comp+"/output_dir") # output - self.prefix = self.configs.getn("galactic/synchrotron/prefix") - self.save = self.configs.getn("galactic/synchrotron/save") - self.output_dir = self.configs.get_path( - "galactic/synchrotron/output_dir") self.filename_pattern = self.configs.getn("output/filename_pattern") self.use_float = self.configs.getn("output/use_float") self.clobber = self.configs.getn("output/clobber") - # common self.nside = self.configs.getn("common/nside") self.lmin = self.configs.getn("common/lmin") self.lmax = self.configs.getn("common/lmax") - # unit of the frequency self.freq_unit = au.Unit(self.configs.getn("frequency/unit")) # logger.info("Loaded and setup configurations") @@ -141,27 +136,22 @@ class Synchrotron: self.template += self.hpmap_smallscales logger.info("Added small-scale fluctuations") - def _transform_frequency(self, frequency): - """Transform the template map to the requested frequency, - according to the spectral model and using an spectral index map. + def _make_filepath(self, **kwargs): + """Make the path of output file according to the filename pattern + and output directory loaded from configurations. """ - hpmap_f = (self.template * - (frequency / self.template_freq) ** self.indexmap) - return hpmap_f - - def simulate(self, frequencies): - """Simulate the synchrotron map at the specified frequencies.""" - self._add_smallscales() - # - hpmaps = [] - for f in np.array(frequencies, ndmin=1): - logger.info("Simulating synchrotron map at {0} ({1}) ...".format( - f, self.freq_unit)) - hpmap_f = self._transform_frequency(f) - hpmaps.append(hpmap_f) - if self.save: - self.output(hpmap_f, f) - return hpmaps + data = { + "prefix": self.prefix, + } + data.update(kwargs) + filename = self.filename_pattern.format(**data) + filetype = self.configs.getn("output/filetype") + if filetype == "fits": + filename += ".fits" + else: + raise NotImplementedError("unsupported filetype: %s" % filetype) + filepath = os.path.join(self.output_dir, filename) + return filepath def _make_header(self): """Make the header with detail information (e.g., parameters and @@ -190,10 +180,7 @@ class Synchrotron: os.mkdir(self.output_dir) logger.info("Created output dir: {0}".format(self.output_dir)) # - filename = self.filename_pattern.format(prefix=self.prefix, - frequency=frequency) - filename += ".fits" - filepath = os.path.join(self.output_dir, filename) + filepath = self._make_filepath(frequency=frequency) if not hasattr(self, "header"): self._make_header() header = self.header.copy() @@ -207,3 +194,50 @@ class Synchrotron: write_fits_healpix(filepath, hpmap, header=header, clobber=self.clobber) logger.info("Write simulated map to file: {0}".format(filepath)) + + def preprocess(self): + """Perform the preparation procedures for the final simulations. + + Attributes + ---------- + _preprocessed : bool + This attribute presents and is ``True`` after the preparation + procedures are performed, which indicates that it is ready to + do the final simulations. + """ + if hasattr(self, "_preprocessed") and self._preprocessed: + return + # + logger.info("{name}: preprocessing ...".format(name=self.name)) + self._load_template() + self._load_indexmap() + self._add_smallscales() + # + self._preprocessed = True + + def simulate_frequency(self, frequency): + """Transform the template map to the requested frequency, + according to the spectral model and using an spectral index map. + """ + self.preprocess() + # + logger.info("Simulating {name} map at {freq} ({unit}) ...".format( + name=self.name, freq=frequency, unit=self.freq_unit)) + hpmap_f = (self.template * + (frequency / self.template_freq) ** self.indexmap) + # + if self.save: + self.output(hpmap_f, frequency) + return hpmap_f + + def simulate(self, frequencies): + """Simulate the synchrotron map at the specified frequencies.""" + hpmaps = [] + for f in np.array(frequencies, ndmin=1): + hpmap_f = self.simulate_frequency(f) + hpmaps.append(hpmap_f) + return hpmaps + + def postprocess(self): + """Perform the post-simulation operations before the end.""" + pass |