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

# HDF_GR_SETCHUNKCACHE

This function allows the user to set the maximum number of chunks to be cached (maxcache). If HDF_GR_SETCHUNKCACHE is not called, maxcache is set to the number of chunks along the fastest changing dimension.

## Syntax

Result = HDF_GR_SETCHUNKCACHE(ri_id, maxcache, flags)

## Return Value

Returns the value of maxcache if successful or FAIL (-1) otherwise.

## Arguments

### ri_id

Raster image identifier returned by HDF_GR_CREATE or HDF_GR_SELECT.

### maxcache

Maximum number of chunks to cache.

### flags

Currently, the only HDF allowed value for flags is zero (cache all).

## Keywords

None

## Version History

5.2 | Introduced