Campbell-scientific LoggerNet Datalogger Support Software Manual de usuario descargar pdf (Pagina 364)

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Section 8. Working with Data Files on the PC

When using the Date function for a table-based datalogger

(e.g., a time stamp in the format “2002-02-03 21:16:00”), if

the time stamp is the first element in the array, a 1 is used for

all of the time stamp elements (S; H; D; Y).

If “serial” is entered for the “format” string, a serial date will

be output. Other special functions are “hourarray” and

“dayofyear”. Both of these are used when processing data

from table-based dataloggers so that the timestamps are

similar to that of mixed array dataloggers. Hourarray

changes a 0000 hourly timestamp to 2400, and dayofyear

produces a Julian Day.

In older versions of Split, the date( ) and edate( ) functions

were limited to converting the Julian day to a MM-DD

format, with a syntax of date(doy;y) where doy = the

element number for the day of the year; y = the element

number for the year. This older format is still supported.

Split will mark the date as Bad Data if the time and date resulting

from the conversion will not fit in the specified column width. The

on-screen display and the report file will precede the date with

asterisks. In the .PRN output file, Split uses the Bad Data string.

When Date and Edate are used within other functions they must

be used with the older format Date(doy;y) and Edate(doy;y)

instead of using the extended date functions as shown in the table.

For example AVG(1;Date(2;2002.0)). The decimal is needed to

indicate a fixed number. Numbers without the decimal are

interpreted as element IDs.

Date Format Examples

Assume that in a mixed array data file, element 2 is Year, element 3 is Day of

Year, element 4 is Hour/Minute, and element 5 is Seconds.

String Entered Output

date(“mm/dd/yy, h:nn”;5;4;3;2) “02/25/02, 4:10”

edate(“mm/dd/yy, hh:nn”;5;4;3;2) 02/25/02, 04:10

edate(“dddd, mmmm d, yyyy”;5;4;3;2) Monday, February 25, 2002

edate(“‘Date:’ mmm d, yyyy”;5;4;3;2) Date: Feb 25 02

If a time element is missing from a mixed array data file, use a valid constant

instead.

If processing a table-based data file, use a 1 for all time elements (assuming the

time stamp is the first element in the data file). For the examples above:

date(“mm/dd/yy, h:nn”;1;1;1;1) “02/25/02, 4:10”

NOTE

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