AIPS HELP file for UVWTFN in 31DEC09

As of Sat Nov 21 18:37:47 2009

HELP SECTION

UVWTFN
Type:  Adverb (String*2)
Use:   Specify weighting function used to equalize coverage
       of measured points in UV plane and otherwise adjust the
       weights.  It is a two character code.  If the first is
       'N' then there is no correction to the data weights for
       the local density of samples or weights.  If it is 'C',
       then the weights are corrected for the local density of
       samples (simple counts).  Otherwise, the weights are
       corrected for the local density of data weights
       (so-called uniform weighting).  The second character
       causes the weights to be modified before the local
       density of weights is measured and aganin before they are
       used.  If the second character is the letter 'V', the
       fourth root of the weights is taken; if it is 'S' the
       square root of the weights is taken; and if it is the
       letter 'O' all weights are taken as 1.0.
Null Value:  '  '
       Null value means Uniform weighting with no conversion of
       weights.

EXPLAIN SECTION