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6.10 Define Checksum Parameters for a Variable: NF90_DEF_VAR_FLETCHER32

The function NF90_DEF_VAR_FLETCHER32 sets the checksum property for a variable in a netCDF-4 file.

This function may only be called after the variable is defined, but before NF90_ENDDEF is called.

Usage

       function nf90_def_var_fletcher32(ncid, varid, checksum)
         integer, intent(in) :: ncid
         integer, intent(in) :: varid
         integer, intent(in) :: checksum
         integer :: nf90_def_var_fletcher32
NCID
NetCDF ID, from a previous call to NF90_OPEN or NF90_CREATE.
VARID
Variable ID.
CHECKSUM
If this is NF90_FLETCHER32, fletcher32 checksums will be turned on for this variable.

Errors

NF90_DEF_VAR_FLETCHER32 returns the value NF90_NOERR if no errors occurred. Otherwise, the returned status indicates an error.

Possible return codes include:

NF90_NOERR
No error.
NF90_BADID
Bad ncid.
NF90_ENOTNC4
Not a netCDF-4 file.
NF90_ENOTVAR
Can't find this variable.
NF90_ELATEDEF
This variable has already been the subject of a NF90_ENDDEF call. In netCDF-4 files NF90_ENDDEF will be called automatically for any data read or write. Once enddef has been called, it is impossible to set the checksum property for a variable.
NF90_ENOTINDEFINE
Not in define mode. This is returned for netCDF classic or 64-bit offset files, or for netCDF-4 files, when they were been created with NF90_STRICT_NC3 flag. (see NF90_CREATE).
NF90_EPERM
Attempt to create object in read-only file.

Example


       

     

      
         
      
     

     

      
         
      
     

     

      
         
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