Re: [ferret_users] How do I create a time variable

To: Ansley Manke <ansley.b.manke@xxxxxxxx>

Subject: Re: [ferret_users] How do I create a time variable

From: "nhacoceano ." <adrianoceano@xxxxxxxxx>

Date: Fri, 23 Aug 2013 18:36:10 -0300

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Hi Ansley,

Thanks for the quick answer.

Yes, my files are in netCDF format and are with the right attributes.

I didn't know about this function TAX_DATESTRING. That's really good. I didn't try yet perform task with the function. However I think it will probably work. If something go wrong I will send another message.

Thanks again.

Cheers,

Adriano

2013/8/23 Ansley Manke <ansley.b.manke@xxxxxxxx>

Hi Adriano,
Welcome to Ferret!

Is this a netCDF file? If so, then we like to check whether it has the right attributes in it so that Ferret can interpret the time axis. Can you plot a time series and does it show the time coordinates correctly?

If that is the case, then you can make a variable with date strings using the function TAX_DATESTRING which converts the internal numeric time coordinates such as seconds or days since some date, to strings. For example,

yes? let tt = t[gt=temp] ! a variable with the numeric time coordinates
yes? let tdates = TAX_DATESTRING(tt, tt, "hour")

yes? list/norow/file=text.dat tdates

If your file is organized differently, please write back and let us know more about the input data, and we can help.

Ansley

On 8/23/2013 10:56 AM, nhacoceano . wrote:

Hello Ferret Folks,

I'm new in using Ferret. But in just a few months I saw how it could help us in many ways and in a quickly approach.

I have a question that might be silly.

My dataset has 4 variables u,v,temp and salt. They have a tstart, tend and lsize.

I wanna create a variable "DATE" as a vector, which ranges from tstart until tend with lsize of length. After this I will list that variable in a .txt file.

Someone could help me?

Many thanks.

Cheers,
Adriano

--

Adriano Wiermann Barroso

Oceanólogo

Universidade Federal do Rio Grande - FURG/RS

Currículo Lattes: http://lattes.cnpq.br/5176193025210848

Adriano Wiermann Barroso

Oceanólogo
Universidade Federal do Rio Grande - FURG/RS
Currículo Lattes: http://lattes.cnpq.br/5176193025210848