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Harris Geospatial / Docs Center / IDL Reference / I/O - CDF / CDF_PARSE_EPOCH

CDF_PARSE_EPOCH

CDF_PARSE_EPOCH

The CDF_PARSE_EPOCH function parses a properly-formatted input string into a double-precision value properly formatted for use as a CDF_EPOCH variable.

Note: CDF_EPOCH variables may be unparsed into a variety of formats using the CDF_ENCODE_EPOCH function.

Examples


test_string = '04-Dec-1995 20:19:18.176'
test_epoch = CDF_PARSE_EPOCH(test_string)
HELP, test_string, test_epoch
PRINT, CDF_ENCODE_EPOCH(test_epoch, EPOCH=0)

IDL Output

TEST_STRING     STRING    = '04-Dec-1995 20:19:18.176'
TEST_EPOCH      DOUBLE    =    6.2985328e+13
 
04-Dec-1995 20:19:18.176

Syntax


Result = CDF_PARSE_EPOCH(Epoch_string)

Return Value


Returns the double-precision value of the input string properly formatted for use as a CDF_EPOCH variable.

Arguments


Epoch_string

A formatted string that will be parsed into a double precision value suitable to be used as a CDF_EPOCH value. The format of the date string is:

DD-Mon-YYYY hh:mm:ss.ccc

where:

Date Element

Represents

DD

the day of the month (1-31)

Mon

the abbreviated month name: (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, or Dec)

YYYY

the year (A.D.)

hh

the hour (0-23)

mm

the minute (0-59)

ss

the second (0-59)

ccc

the millisecond (0-999)

For more information about CDF_EPOCH values, see “Data Types” in the CDF User’s Guide.

Keywords


None

Version History


4.0.1b

Introduced

See Also


CDF_ENCODE_EPOCH, CDF_EPOCH



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