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

# EOS_PT_PERIODINFO

This function returns information about a subsetted time period for a particular fieldlist.

## Examples

In this example, we get the size of the subsetted time period defined in EOS_PT_DEFTIMEPERIOD for the Time field:

status = EOS_PT_PERIODINTO(pointID, periodID, 0, "Time", size)

## Syntax

Result = EOS_PT_PERIODINFO(pointID, periodID, level, fieldlist, size)

## Return Value

Returns SUCCEED (0) if successful and FAIL (–1) otherwise.

## Arguments

### pointID

Point id (long).

### periodID

Period id (long) returned by EOS_PT_DEFTIMEPERIOD.

### level

Point level (0-based long).

### fieldlist

List of fields (string) to extract.

### size

A named variable that will contain the size in bytes (long) of subset period.

## Keywords

None

## Version History

5.2 | Introduced