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Helper function for auto-applying colmap #173

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merged 1 commit into from
Oct 16, 2024
Merged

Helper function for auto-applying colmap #173

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3 changes: 3 additions & 0 deletions src/tdastro/astro_utils/opsim.py
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Original file line number Diff line number Diff line change
Expand Up @@ -145,6 +145,9 @@ def __len__(self):

def __getitem__(self, key):
"""Access the underlying opsim table."""
# Auto apply the colmap if possible.
if self.colmap is not None and key in self.colmap:
return self.table[self.colmap[key]]
return self.table[key]

@property
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6 changes: 3 additions & 3 deletions src/tdastro/example_runs/simulate_snia.py
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Expand Up @@ -34,11 +34,11 @@ def draw_single_random_sn(
obs_index = np.array(opsim.range_search(ra, dec, radius=1.75))

# Update obs_index to only include observations within SN lifespan
phase_obs = opsim[opsim.colmap["time"]][obs_index] - t0
phase_obs = opsim["time"][obs_index] - t0
obs_index = obs_index[(phase_obs > -20 * (1.0 + z)) & (phase_obs < 50 * (1.0 + z))]

times = opsim[opsim.colmap["time"]][obs_index].to_numpy()
filters = opsim[opsim.colmap["filter"]][obs_index].to_numpy(str)
times = opsim["time"][obs_index].to_numpy()
filters = opsim["filter"][obs_index].to_numpy(str)
# Change to match band names in passbands object
filters = np.char.add("LSST_", filters)

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