[ferret_users] apply an offset on the time axis of a variable

To: ferret_users@xxxxxxxx
Subject: [ferret_users] apply an offset on the time axis of a variable
From: "Patrick Brockmann" <patrick.brockmann@xxxxxxxxxxxx>
Date: Wed, 26 Apr 2017 17:04:52 +0200
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Hi ferreters,

Is there a way to apply an offset on the time axis of a variable ?
I would like to add for example 50 years to all dates that are described
from the coordinates axis of a variable. 
I am looking for a dynamic solution not by changing values in the file.

I have found a DATES function but have not been able to find the relative
documentation or an example.

yes? show  function dates
DATES(Offsets)
    Returns a string array of dates derived from the time axis and the given offsets
    Offsets: Offsets from the time given by time axis

But nothing from 
http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/appendix-a-external-functions/appendix-a

Any idea ?
Thanks

Regards
Patrick


-- 
Data Analysis and Visualization Engineer
LSCE/IPSL, CEA-CNRS-UVSQ laboratory
LSCE - Climate and Environment Sciences Laboratory
IPSL - Institut Pierre Simon Laplace
--

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