Campbell Scientific RTDAQ Software - Manual (Page 309)

Section 10. Utilities
The date( ) function can be used for the interval in a time series function to
produce monthly output. Refer to the Monthly summary example in Section
10.3.3.1.12.
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. 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.
NOTE
The interval count in a Time Series Function is optional and does not require a
decimal point. To determine the interval, Split counts the number of arrays
which meet the specified conditions (Stop, Start, and Copy). If the time
synchronize function is enabled, the Time Series functions remain
synchronized to the starting time even if a complete array is missing from the
input data. When elements are missing, the Time Series calculations are based
on the actual number of elements found.
Semicolons are used in Time Series functions to separate the elements or
expressions from the count which determines the interval. SmplMax and
SmplMin require two elements separated by a semicolon. The first is checked
for a maximum or minimum, while the second is sampled on the maximum or
minimum.
The following set of weather data from Mt. Logan in northern Utah gives a
total of seven elements each hour. This Field Formatted output, with title and
column headers, was generated by Split. These data are used in the following
examples of Time Series functions.
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