CDF_EPOCH_DIFF
==============

The CDF_EPOCH_DIFF function compares two epoch (date and time) values and 
returns the difference in milliseconds (default) or microseconds.

The procedure allows input of an array of values to compare. Initially, it
could only handle a scalar.

Examples

CDF_EPOCH, epoch, 2005,6,1,10,18,17,2,/COMPUTE

CDF_EPOCH, epoch1, 2005,6,1,10,18,17,2,3,4,5,/COMPUTE

CDF_EPOCH, epoch2, 2005,6,1,10,18,17,2,1,4,5,/COMPUTE

CDF_EPOCH, epoch3, 2005,6,1,10,18,17,1,/COMPUTE

PRINT, 'Difference between epoch1 and epoch, in milliseconds: ',$

   CDF_EPOCH_DIFF(epoch1,epoch)

PRINT, 'Difference between epoch1 and epoch, in microseconds: ',$

   CDF_EPOCH_DIFF(epoch1,epoch,/MICRO_SECONDS)

PRINT, 'Difference between epoch1 and epoch2, in microseconds: ',$

   CDF_EPOCH_DIFF(epoch1,epoch2,/MICRO_SECONDS)

PRINT, 'Difference between epoch1 and epoch3, in microseconds: ',$

   CDF_EPOCH_DIFF(epoch1,epoch3,/MILLI_SECONDS)

Syntax

Result = CDF_EPOCH_DIFF(epoch1, epoch2 [, /MILLI_SECONDS] $
                                       [, /MICRO_SECONDS])

Arguments

epoch1
epoch2

An epoch value returned from CDF_EPOCH or CDF_EPOCH16 with the COMPUTE keyword 
set, or from CDF_VARGET or CDF_VARGET1.

Keywords

MILLI_SECONDS

Set this keyword to return the difference in milliseconds. This is the default.

MICRO_SECONDS

Set this keyword to return the difference in microseconds.

Version History

6.4

Introduced


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