Modification examples

Version 1.9 Build 2065

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: update MY.MS set VIDEO_POINT=MEANS(DATA,2) where isdefined(DATA)
sets the VIDEO_POINT of each correlation to the mean of the DATA for that correlation. Note that the 2 indicates averaging over the second axis, thus the frequency axis.
: update MY.MS set FLAG_ROW=T where isdefined(FLAG) && all(FLAG)
sets FLAG_ROW in the rows where the entire FLAG array is set.
: delete from MY.MS where FLAG_ROW
deletes all flagged rows.
: insert into MY.MS select from OTHER.MS where !FLAG_ROW
copies all unflagged rows from OTHER.MS to MY.MS.
: insert into MY.MS/DATA_DESCRIPTION
(SPECTRAL_WINDOW_ID,POLARIZATION_ID,FLAG_ROW)
values (1,0,F)
adds a row to the DATA_DESCRIPTION subtable and initializes it.

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