operator not implemented

["Govind Kabra" <gkabra2@xxxxxxxx>]

Hi all,
 I am trying to use constraint expressions to obtain a part of
netCDF dataset, and the dap_nc_handler is giving an unimplemented
operator error. Can you help me with this?

 I obtained the dataset from:

ftp://ftp.cdc.noaa.gov/Datasets/icoads/2degree/std/air.mean.nc

The DDS for this dataset is:

gkabra2@elephant:~> dap_nc_handler -o dds test_data/air.mean.nc

HTTP/1.0 200 OK

XDODS-Server: 3.6.0

XOPeNDAP-Server: 3.6.0

XDAP: 3.0

Date: Sat, 03 Jun 2006 17:13:15 GMT

Last-Modified: Wed, 31 May 2006 19:43:00 GMT

Content-Type: text/plain

Content-Description: dods_dds

 

Dataset {

    Float32 lat[lat = 90];

    Float32 lon[lon = 180];

    Float64 time[time = 2472];

    Grid {

      Array:

        Int16 air[time = 2472][lat = 90][lon = 180];

      Maps:

        Float64 time[time = 2472];

        Float32 lat[lat = 90];

        Float32 lon[lon = 180];

    } air;

} air.mean.nc;


 When I try directly using dap_nc_handler, I get an unsupported operator error:

gkabra2@elephant:~> dap_nc_handler -o DataDDS -e 'air.air&time<657075' test_data/air.mean.nc

HTTP/1.0 200 OK

XDODS-Server: 3.6.0

XOPeNDAP-Server: 3.6.0

XDAP: 3.0

Date: Sat, 03 Jun 2006 17:23:56 GMT

Last-Modified: Wed, 31 May 2006 19:43:00 GMT

Content-Type: application/octet-stream

Content-Description: dods_data

 

Dataset {

    Int16 air[time = 2472][lat = 90][lon = 180];

} air.mean.nc;

Data:

HTTP/1.0 200 OK

XDODS-Server: 3.6.0

XOPeNDAP-Server: 3.6.0

XDAP: 3.0

Date: Sat, 03 Jun 2006 17:23:56 GMT

Last-Modified: Sat, 03 Jun 2006 17:23:56 GMT

Content-Type: text/plain

Content-Description: dods_error

Cache-Control: no-cache

 

Error {

    code = 1002;

    message = "An internal error was encountered in BaseType.cc at line 866:

Unimplemented operator.

Please report this to support@xxxxxxxxxxxxxxxx

";

};


 If I use dap_asciival, I am getting an internal server error:
gkabra2@elephant:~> dap_asciival -f dap_nc_handler -e 'air&air.time<657075' -w test_data/air.mean.nc | more
Reading: test_data/air.mean.nc
Error: An internal error was encountered in Vector.cc at line 551:
The server sent declarations and data with mismatched sizes.
Please report this to support@xxxxxxxxxxxxxxxx

Thanks,
Govind