Alex,
> Full Name: Alex THEPAUT
> Email Address: address@hidden
> Organization: Capgemini
> Package Version:
> Operating System: Solaris/Linux
> Hardware:
> Description of problem: Hello,
>
> I want to read variable values in a NetCdf file. I use the following script :
>
> $l_file = NetCDF::open("$LATEST_DIRECTORY/$l_directory/$p_file", NOWRITE);
> $l_varId = NetCDF::varid($l_file, "LONGITUDE");
> NetCDF::varinq($l_file, $l_varId, \$l_name, \$l_datatype, \$l_dimCount,
> address@hidden, \$l_atts);
>
> $l_dimSizes[$l_dimCount - 1] = undef;
> NetCDF::diminq($l_file, $l_dimIds[0], \$l_name, \$l_dimSizes[0]);
> NetCDF::varget($l_file, $l_varId, [0], [$l_dimSizes[0]], address@hidden);
>
> foreach $l_value (@l_fileValues)
> {
> print "Value $l_fileValues[$l_value]\n";
> }
>
> The values I get are :
>
> Value 0.992666661739349
> Value 0.992666661739349
> Value 0.992666661739349
> Value 0.992666661739349
> Value 0.484833329916
> Value -0.00499999988824129
>
> But in the file, they are :
> LONGITUDE = 0.9926667, 0.4848333, -0.005, -0.5225, 1.254, 2.887333 ;
>
> When I do the same with the variables LATITUDE or TIME, the returned values
> are blank. In the file they are as follows :
> LATITUDE = 71.082, 71.38717, 71.69417, 72.0075, 72.30666, 72.6185 ;
> TIME = 22418.0970833333, 22418.2295833333, 22418.3539236111,
> 22418.4977430556, 22418.717337963, 22418.913587963 ;
>
> Could you help me ?
I assume the LONGITUDE variable is one-dimensional. Tell me if this is
incorrect.
The NetCDF::varget() call, the "count" argument ([$l_dimSizes[0]]) appears to
be a one-element, one-dimensional vector (which is correct) but with a value of
"undef" -- which is probably not what you want. Get the size of the relevant
dimension via the call
NetCDF::diminq($l_file, $l_dimIds[0], \$l_name, \$l_size)
and then use that size to get the variable's values:
NetCDF::varget($l_file, $l_varId, [0], [$l_size], address@hidden);
> Best regards
>
> Alex THEPAUT
Regards,
Steve Emmerson
Ticket Details
===================
Ticket ID: UIB-497429
Department: Support netCDF Perl
Priority: Normal
Status: Closed
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.