Routines (alphabetical) > Routines: H > HDF Routines > HDF_GR_NAMETOINDEX

# HDF_GR_NAMETOINDEX

This function returns the index of the raster image named gr_name for the HDF GR interface identified by the parameter gr_id.

The value of index can be passed into HDF_GR_SELECT to obtain the raster image identifier (ri_id).

## Syntax

Result = HDF_GR_NAMETOINDEX(gr_id, gr_name)

## Return Value

Returns the index of the raster image if successful or FAIL (-1) otherwise.

## Arguments

### gr_id

HDF_GR_ interface identifier returned by HDF_GR_START.

### gr_name

Name of the raster image.

## Keywords

None

## Version History

5.2 | Introduced