Routines (alphabetical) > Routines: N > NCDF Routines > NCDF_ATTNAME

# NCDF_ATTNAME

The NCDF_ATTNAME function returns the name of an attribute in a NetCDF file given its ID.

## Syntax

Result = NCDF_ATTNAME( Cdfid [, Varid] , Attnum [, /GLOBAL])

## Return Value

Returns the specified attribute’s name or an empty string (“”) if there is no such attribute.

## Arguments

### Cdfid

The NetCDF ID, returned from a previous call to NCDF_OPEN, NCDF_CREATE, or NCDF_GROUPDEF.

### Varid

The NetCDF variable ID, returned from a previous call to NCDF_VARDEF or NCDF_VARID, or the name of the variable. If the GLOBAL keyword is set, this argument must be omitted.

### Attnum

An expression containing the number of the desired attribute. The attributes for each variable are numbered from 0 to the number-of-attributes minus 1. Note that the number of attributes can be found using NCDF_VARINQ or NCDF_INQUIRE (to find the number of global variables).

## Keywords

### GLOBAL

Set this keyword to return the name of one of the global attributes.

## Version History

Pre 4.0 | Introduced

## See Also

NCDF_ATTINQ