Re: [ferret_users] irregular time axis

[Mark Verschell <mav9@xxxxxx>]

I know TWO ways to do it, Chinnu, but neither might be the BEST way....

Add the missing dates to your ascii file with bad data values in them. Time consuming, but it would work. Example:

      DATE      DATA

15-jan-1952       -1

15-feb-1952       -1

15-mar-1952       -1

15-apr-1952       -1

15-may-1952       -1

15-jun-1952       -1

15-jul-1952       -1

15-aug-1952       -1

15-sep-1952    10

15-oct-1952    11
15-nov-1952    12

15-dec-1952    12

15-jan-1953       -1

15-feb-1953       -1

15-mar-1953       -1

15-apr-1953       -1

15-may-1953       -1

15-jun-1953       -1

15-jul-1953       -1

15-aug-1953       -1

15-sep-1953    13
15-oct-1953    14

15-nov-1953    15

15-dec-1953    -1

.

.

.

15-oct-2007         -1

15-nov-2007       1,123

15-dec-2007        -1

Another way to do it, is to define an irregular time axis - per this post: http://www.pmel.noaa.gov/maillists/tmap/ferret_users/fu_2012/msg00267.html

You would have to convert your dates to, call it TIME STEPS. There is a ferret function to do this DAYS1900. I refer you to the post above which details the procedure.

Mark Verschell

On Mar 1, 2014, at 12:33 AM, chinnu sachi <chinnu.sachi7@xxxxxxxxx> wrote:

Dear ferret users,

               I want to convert an ascii file to nc file, but the time axis is not regular. I want my time axis as

15-sep-1952

15-oct-1952

15-nov-1952

15-sep-1953

15-oct-1953

15-nov-1953

till 15-nov-2007.

As we can see each year got only 3 months value, so how can I define a time axis for this data.

I had seen the below link in user's group, but I don't know which way I can use it.

http://www.pmel.noaa.gov/maillists/tmap/ferret_users/fu_2012/msg00267.html

Thanks in advance.

--
Regards,
Chinnu Sachidanandan
csachidanandan@xxxxxxx