Closed Joshuaalbert closed 3 months ago
dirty2ms
is basically an older, less flexible version of dirty2vis
that I have left in the Python module for backwards compatibility. Internally every call to dirty2ms
is mapped onto a call to dirty2vis
; same for ms2dirty
/vis2dirty
. "MS" stands for "measurement set" and is a 2D complex-valued array representing the "row x channel" structure of a radio interferometry measurement set data.
From a purely technical viewpoint the docstrings should be fairly complete, I hope; if there is anything concrete missing, I'll try my best to fix this. A more high level description of the algorithm is given in https://arxiv.org/abs/2010.10122 .
Hi @mreineck Thanks for the explanation. Reading the numpy implementation was insightful https://gitlab.mpcdf.mpg.de/mtr/ducc/-/blob/ducc0/python/demos/wgridder_python_implementations.py
Thanks for the feedback - it is very good to know that these toy implementations are useful!
Is there some documentation on the precise definition of what these two functions,
dirty2ms
, anddirty2vis
are how they are different? Where is the "MS object" defined? These docs are not clear https://mtr.pages.mpcdf.de/ducc/wgridder.html