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Warn if no valid visibility data are available before imaging #61

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Merged
tnakazato merged 1 commit into from
Aug 1, 2025
Merged

Warn if no valid visibility data are available before imaging #61

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6 changes: 6 additions & 0 deletions python/priism/core/imager.py
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Original file line number Diff line number Diff line change
Expand Up @@ -198,6 +198,12 @@ def solve(self, l1, ltsv, maxiter=50000, eps=1.0e-5, clean_box=None,

def _solve(self, mfistaparam, working_set, storeinitialimage=True, overwriteinitialimage=False):
assert working_set is not None
if working_set is None or len(working_set.rdata) == 0:
raise RuntimeError(
"No visibility data is given. Please run readvis or gridvis first. "
"If you already did, probably all the visibility data are flagged (invalid). "
"Please check contents of the MS and tweak channel selection appropriately."
)
self.solver.mfistaparam = mfistaparam
return self.solver.solve(working_set, self.imparam, storeinitialimage, overwriteinitialimage)

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