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[ferret_users] whether it is bug in TDS or in Ferret ?



I would be very curious to know why after download all data points are integer,  developers kindly explain the issue

    NOAA/PMEL TMAP
     FERRET v6.842 
     Linux 2.6.18-348.el5PAE 32-bit - 02/01/13
     22-Aug-13 12:26    

listing data without downloading

yes? set data "http://www.esrl.noaa.gov/psd/thredds/dodsC/Aggregations/OISSThires/"
yes? set r/l=11535
yes? list sst
             VARIABLE : Daily Sea Surface Temperature (degC)
             DATA SET : NOAA High-resolution Blended Analysis: Daily Values using AVHRR only
             FILENAME : sst.mean.nc
             FILEPATH : http://www.esrl.noaa.gov/psd/thredds/dodsC/Aggregations/OISSThires/
             SUBSET   : 60 by 40 points (LONGITUDE-LATITUDE)
             TIME     : 31-MAR-2013 00:00
      ... listing every   4th point
                80.13E 81.13E 82.13E 83.13E 84.13E 85.13E 86.13E 87.13E 88.13E 89.13E 90.13E 91.13E 92.13E 93.13E 94.13E
                321    325    329    333    337    341    345    349    353    357    361    365    369    373    377
 19.88N / 440:   ....   ....   ....   ....   ....   ....  27.71  28.01  28.44  28.48  28.35  28.63  28.83  28.77   ....
 19.63N / 439:   ....   ....   ....   ....   ....   ....  28.06  28.22  28.50  28.67  28.54  28.71  28.89  28.74   ....
 19.38N / 438:   ....   ....   ....   ....   ....  27.56  28.32  28.32  28.48  28.77  28.67  28.76  28.86  28.63   ....
 19.13N / 437:   ....   ....   ....   ....   ....  27.93  28.32  28.29  28.39  28.78  28.70  28.77  28.82  28.55   ....
 18.88N / 436:   ....   ....   ....   ....   ....  28.26  28.12  28.17  28.35  28.76  28.64  28.70  28.77  28.53   ....
 18.63N / 435:   ....   ....   ....   ....   ....  28.38  27.90  27.99  28.35  28.67  28.57  28.57  28.68  28.52  29.22
 18.38N / 434:   ....   ....   ....   ....  28.15  28.34  27.86  27.87  28.35  28.59  28.53  28.48  28.59  28.53  29.11
 18.13N / 433:   ....   ....   ....   ....  28.38  28.22  27.93  27.88  28.36  28.55  28.54  28.47  28.56  28.59  28.87


yes? set r/x=80E:95E/y=10N:20N/l=11354:11535
yes? list/file=sst_new.nc/format=cdf sst
LISTing to file sst_new.nc

after download of dataset all data points are integer there is no even single decimal point

listing data after download

yes? set r/l=182
yes? list sst
             VARIABLE : Daily Sea Surface Temperature (degC)
             FILENAME : sst_new.nc
             SUBSET   : 60 by 40 points (LONGITUDE-LATITUDE)
             TIME     : 31-MAR-2013 00:00
      ... listing every   4th point
               80.13E 81.13E 82.13E 83.13E 84.13E 85.13E 86.13E 87.13E 88.13E 89.13E 90.13E 91.13E 92.13E 93.13E 94.13E
                 1      5      9     13     17     21     25     29     33     37     41     45     49     53     57
 19.88N / 40:   ....   ....   ....   ....   ....   ....  27.00  28.00  28.00  28.00  28.00  28.00  28.00  28.00   ....
 19.63N / 39:   ....   ....   ....   ....   ....   ....  28.00  28.00  28.00  28.00  28.00  28.00  28.00  28.00   ....
 19.38N / 38:   ....   ....   ....   ....   ....  27.00  28.00  28.00  28.00  28.00  28.00  28.00  28.00  28.00   ....
 19.13N / 37:   ....   ....   ....   ....   ....  27.00  28.00  28.00  28.00  28.00  28.00  28.00  28.00  28.00   ....
 18.88N / 36:   ....   ....   ....   ....   ....  28.00  28.00  28.00  28.00  28.00  28.00  28.00  28.00  28.00   ....
 18.63N / 35:   ....   ....   ....   ....   ....  28.00  27.00  27.00  28.00  28.00  28.00  28.00  28.00  28.00  29.00
 18.38N / 34:   ....   ....   ....   ....  28.00  28.00  27.00  27.00  28.00  28.00  28.00  28.00  28.00  28.00  29.00
 18.13N / 33:   ....   ....   ....   ....  28.00  28.00  27.00  27.00  28.00  28.00  28.00  28.00  28.00  28.00  28.00


ncdump -h sst_new.nc
netcdf sst_new {
dimensions:
    LON321_380 = 60 ;
    LAT401_440 = 40 ;
    TIME = UNLIMITED ; // (182 currently)
variables:
    float LON321_380(LON321_380) ;
        LON321_380:long_name = "Longitude" ;
        LON321_380:units = "degrees_east" ;
        LON321_380:axis = "X" ;
        LON321_380:modulo = 360.f ;
        LON321_380:point_spacing = "even" ;
        LON321_380:standard_name = "longitude" ;
    float LAT401_440(LAT401_440) ;
        LAT401_440:long_name = "Latitude" ;
        LAT401_440:units = "degrees_north" ;
        LAT401_440:axis = "Y" ;
        LAT401_440:point_spacing = "even" ;
        LAT401_440:standard_name = "latitude" ;
    double TIME(TIME) ;
        TIME:long_name = "Time" ;
        TIME:units = "days since 1800-01-01 00:00:00" ;
        TIME:axis = "T" ;
        TIME:time_origin = "01-JAN-1800 00:00:00" ;
        TIME:standard_name = "time" ;
    short SST(TIME, LAT401_440, LON321_380) ;
        SST:missing_value = 327s ;
        SST:_FillValue = 327s ;
        SST:long_name = "Daily Sea Surface Temperature" ;
        SST:units = "degC" ;
        SST:history = "From sst.mean" ;

// global attributes:
        :history = "FERRET V6.842   20-Aug-13" ;
        :Conventions = "CF-1.0" ;
}


TDS Version: 4.3.17


Regards,

Akshay Hegde,

National Institute of Oceanography,

Dona Paula, Goa






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