Alex,
> I have to read a NetCDF file in which a variable (LONGITUDE) is defined, with
> attributes, but in the values part of the file there is no data for this
> variable (the variable doesn't exist in fact)
>
> The code I user is :
>
> $l_varId = NetCDF::varid($p_file, $p_variable);
> $l_status = NetCDF::varinq($p_file, $l_varId, \$l_name, \$l_datatype,
> \$l_dimCount, address@hidden, \$l_atts);
> if ($l_status == -1)
> {
> Print "$p_variable doesn't exist\n";
> }
> else
> {
> $l_status = $TRUE;
> $l_dimSizes[$l_dimCount - 1] = undef;
> NetCDF::diminq($p_file, $l_dimIds[0], \$l_name, \$l_dimSizes[0]);
> NetCDF::varget($p_file, $l_varId, [0], [$l_dimSizes[0]], address@hidden);
> }
>
> And I get the following message : "ncvarget: ncid 10; varid 20: Index exceeds
> dimension bound" and the script stops immediately.
>
> I tried the same with an "eval block" like ths :
>
> $l_varId = NetCDF::varid($p_file, $p_variable);
> $l_status = NetCDF::varinq($p_file, $l_varId, \$l_name, \$l_datatype,
> \$l_dimCount, address@hidden, \$l_atts);
> if ($l_status == -1)
> {
> Print "Error reading $p_variable\n";
> }
> else
> {
> $l_status = $TRUE;
> $l_dimSizes[$l_dimCount - 1] = undef;
> NetCDF::diminq($p_file, $l_dimIds[0], \$l_name, \$l_dimSizes[0]);
> eval
> {
> NetCDF::varget($p_file, $l_varId, [0], [$l_dimSizes[0]], address@hidden);
> };
> if($@)
> {
> CoScrReport::SendError("Variable $p_variable has no values : $@");
> }
> }
>
> But I still have the same error message and the script stops.
>
> Questions : how can I catch the error to write an user friendly error
> message and that the script doesn't stops immediately ?
You have to use the NetCDF::opts(i) function to tell the netCDF library not to
exit if an error occurs. Valid values are 0, NetCDF::FATAL (1), NetCDF::VERBOSE
(2), or a bitwise OR of these values. I would call NetCDF::opts(0).
> Thanks for your response.
>
> Best regards
>
> Alex THEPAUT
Regards,
Steve Emmerson
Ticket Details
===================
Ticket ID: GTU-862479
Department: Support netCDF Perl
Priority: Normal
Status: Closed
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