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RE: [ferret_users] define axis / grid from variables



Hi,

 

Thank you to both of you.

I will test what is better/easier.

Thanks a lot.

Marina

 

 

De: owner-ferret_users@xxxxxxxx [mailto:owner-ferret_users@xxxxxxxx] En nombre de Ansley Manke
Enviado el: lunes, 20 de abril de 2015 18:52
Para: ferret_users@xxxxxxxx
Asunto: Re: [ferret_users] define axis / grid from variables

 

Marina,
I have one other idea to throw in here.

For picking out individual locations from a curvilinear grid, the SAMPLEXY_CURV* functions are useful.  So if all you need is a few specific locations, you could sample the data and save the resulting time series or depth profiles to compare it to other data.

Ansley

On 4/20/2015 5:07 AM, Marina Chifflet wrote:

Hi Paulo,

 

Thanks for your answer.

 

To make a “shade” or a “fill” of the variables, yes, it’s not a problem. We use var,lon,lat

 

But I would like to save the variables with a geo-ref grid to be able to extract the simulated variable at a defined position lon/lat and thus compare it to data.

 

I’m going to look the link you’ve indicated. Thanks

Marina

 

De: Paulo B. Oliveira [mailto:pboliveira@xxxxxxx]
Enviado el: lunes, 20 de abril de 2015 12:28
Para: Marina Chifflet
CC: ferret_users@xxxxxxxx
Asunto: Re: [ferret_users] define axis / grid from variables

 

Hi Marina,

Try the attached script and see if you get the same output.

You may wish to look at the curv_to_rect function
( http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/appendix-a-external-functions/CURV-TO-RECT?searchterm=curv )
if are going to combine your data with data from other sources.

Saludos,

Paulo


On Mon, 2015-04-20 at 08:54 +0000, Marina Chifflet wrote:

Hi Folks

 

I apologize for the easy question, but I can’t find the right syntax and I’m becoming crazy….

 

I have files with model outputs on a i/j/k grid (not geo-ref)

I=1:236 / j=1:150 / k=1:72

(example of the diatoms file “1997_4.3v4_DIAT_march.nc” on ftp://ftp.azti.es/resto/mchifflet/)

On other hand, I have the latitudes and longitudes in a separated file, with the same i/j grid: ll5km.nc (attached file)

LAT and LON are defined on the 2D grid i,j

 

How can I create axis/grid from the variables in ll5km.nc ?

To be able to save the output variables of the model on the right grid.

 

I tried a lot of syntaxes but can’t find the right one.

 

Because each of the variables LAT and LON are defined on a 2D i,j grid, I cannot use :

define axis/x/from_data/name=longulf lon[d=1]

 

Do you know the syntax to do this?

Thanks a lot.

Regards,

______________________________________

Dr Marina Chifflet

AZTI - Tecnalia / Marine research Division
Herrera Kaia Portualde z/g
20110 Pasaia (Gipuzkoa) - Spain
Tel: (+34) 667 174 495
e-mail: mchifflet@xxxxxxx
http://www.researchgate.net/profile/Marina_Chifflet
http://www.azti.es

 


 

 


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