Routines (alphabetical) > Routines: H > HDF-EOS Routines > EOS_GD_DUPREGION

# EOS_GD_DUPREGION

This function copies the information stored in a current region or period to a new region or period and generates a new id. It is useful when the user wishes to further subset a region (period) in multiple ways.

## Examples

In this example, we first subset a grid with EOS_GD_DEFBOXREGION, duplicate the region creating a new region ID, regionID2, and then perform two different vertical subsets of these (identical) geographic subset regions:

regionID = EOS_GD_DEFBOXREGION(gridID, cornerlon, cornerlat)

regionID2 = EOS_GD_DUPREGION(regionID)

regionID = EOS_GD_DEFVRTREGION(gridID, regionID, "Pressure",$

rangePres)

regionID2 = EOS_GD_DEFVRTREGION(gridID, regionID2, $

"Temperature", rangeTemp)

## Syntax

Result = EOS_GD_DUPREGION(regionID)

## Return Value

Returns new region or period ID or FAIL (–1) if the region cannot be duplicated.

## Arguments

### regionID

Region or period id (long) returned by EOS_GD_DEFBOXREGION or EOS_GD_DEFVRTREGION.

## Keywords

None

## Version History

5.2 | Introduced