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unshiftfreq.pro

Last modification date:
Sun Oct 22 03:20:02 2017

unshiftfreq

function unshiftfreq(freq, voffset, [veldef=string])

Undo the effects of shiftfreq using the same voffset (do not use its negative here). See the comments in shiftfreq. This is intended to only be used on a quantity that is the result from shiftfreq.

Returns
the unshifted frequencies in Hz.
Version
$Id$

Parameters
freq
in, required
double 		The frequencies, in Hz, to unshift.
voffset
in, required
double 		The velocity offset (m/s) to remove. This should be the same value used in a previous call to shiftfreq.

Keywords
veldef
in, optional
string (def. 'RADIO') 		The velocity definition from one of RADIO, OPTICAL or TRUE.

Produced by IDLdoc 1.6 on Sun Oct 22 03:20:17 2017