[Thread Prev][Thread Next][Index]

[ferret_users] netCDF compression by gathering and ferret



       Hi all,

How ferret can be used with netCDF data compressed by gathering as it is described in CF convention (http://www.cgd.ucar.edu/cms/eaton/cf-metadata/CF-1.0.html#gath) ?

When I use the usual command "use", "show data", "show grid" ferret seems not to understand this type of compression.
See below the ncdump of a netCDF compressed like this.

Thanks in advance for your comments.
Tony

netcdf withice.no {
dimensions:
        lon = 207 ;
        lat = 174 ;
        depth = 6 ;
        oceanpoint = 29742 ;
        surfacepoint = 8469 ;
        time = UNLIMITED ; // (12 currently)
variables:
        float lon(lon) ;
                lon:standard_name = "longitude" ;
                lon:units = "degrees_east" ;
                lon:long_name = "longitude" ;
        float lat(lat) ;
                lat:standard_name = "latitude" ;
                lat:units = "degrees_north" ;
                lat:long_name = "latitude" ;
        float depth(depth) ;
                depth:standard_name = "depth" ;
                depth:units = "meters" ;
                depth:long_name = "depth" ;
                depth:positive = "down" ;
        int oceanpoint(oceanpoint) ;
                oceanpoint:long_name = "wet point index" ;
                oceanpoint:compress = "lon lat depth" ;
        int surfacepoint(surfacepoint) ;
                surfacepoint:long_name = "surface wet point index" ;
                surfacepoint:compress = "lon lat" ;
        int time(time) ;
                time:units = "hours since 2001-01-02 00:00:00 UTC" ;
                time:long_name = "time" ;
        float elev(time, surfacepoint) ;
                elev:standard_name = "sea_surface_height_above_geoid" ;
                elev:units = "meter" ;
                elev:long_name = "sea surface elevation" ;
                elev:valid_range = -10.f, 10.f ;

// global attributes:
                :Conventions = "CF-1.0" ;
                :institution = "Center for Ocean and Ice, Danish Meteorological Institute" ;
                :source = "DMIcmod model output converted to NetCDF" ;
                :history = "DMIcmod vers. Version 3.0.r0 per DMI/COI Feb 22nd 2006" ;
}



-- 
Tony Jolibois

CLS - Direction Océanographie Spatiale
8-10 rue hermès - 31520 Ramonville Saint-Agne
tjolibois@cls.fr

Tél : +33 (0) 561 393 797
Fax : +33 (0) 561 393 782

[Thread Prev][Thread Next][Index]

Dept of Commerce / NOAA / OAR / PMEL / TMAP

Contact Us | Privacy Policy | Disclaimer | Accessibility Statement