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

# NCDF_INQUIRE

The NCDF_INQUIRE function returns a structure that contains information about an open NetCDF file. This structure of the form:

{ NDIMS:0L, NVARS:0L, NGATTS:0L, RECDIM:0L }

The structure tags are described below.

## Examples

See NCDF_VARDEF.

## Syntax

Result = NCDF_INQUIRE(Cdfid)

## Return Value

The returned structure contains the following tags:

Tag | Description
Ndims | The number of dimensions defined for this NetCDF file.
Nvars | The number of variables defined for this NetCDF file.
Ngatts | The number of global attributes defined for this NetCDF file.
RecDim | The ID of the unlimited dimension, if there is one, for this NetCDF file. If there is no unlimited dimension, RecDim is set to -1.

## Arguments

### Cdfid

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

## Keywords

None

## Version History

Pre 4.0 | Introduced