Instruction manual

PC208W, Version 3.0, Instruction Manual 3-1
SECTION 3. REPORT: SPLIT
3.1 OVERVIEW
SPLIT is a tool to aid the use and analysis of
data collected with Campbell Scientific
dataloggers. Its name comes from its function
of splitting specific data from a larger data file.
The most common application, as shown in
Section 3.2, Getting Started, is to separate data
collected on a particular interval from a data file
containing data output at several different
intervals.
In addition to simply splitting a data array
collected at one interval from all the data
collected by a datalogger, SPLIT applications
include: data selection based on time or
conditions, statistics, calculations, file
reformatting, data quality checking (limit
testing), table generation with report and
column headings, and time synchronizing and
merging of up to eight files.
Input Files (maximum of eight) are read by
SPLIT, specific operations are performed on the
data, and the results are output to a single
Output File or print out. SPLIT creates a
parameter file (filename.PAR) that defines
which data files are read, what operations are
performed on the data set, and where the final
results will be saved. The parameter file may
be saved and used again.
Input Files (Section 3.3.1) must be formatted in
Printable ASCII, Comma Separated ASCII,
Field Formatted ASCII, Final Storage (Binary)
Format, or Raw A/D data.
Output files generated by SPLIT are Field
Formatted (default), Comma Separated ASCII,
or Printable ASCII.
SPLIT lends itself to experimentation. The
processed data are displayed on the screen,
giving immediate feedback as to the effect of
changes or new entries to the parameter file.
The Input File is not modified by SPLIT.
3.2 GETTING STARTED
The most common use of SPLIT is to separate
data collected on a particular interval from a
data file containing data output at several
different intervals.
In the following example, hourly data are split
from a data set that contains both hourly and
daily data. The data were collected from
Weather Station 1, a CR10X. The station was
named WS1 when telecommunications were
set up so the data are stored in the file
WS1.dat. The CR10X was loaded with a
program created by EDLOG named WS1.dld.
The hourly data, array 10, and the daily data,
array 20, are intermixed in the data file
(Figure 3.2-1)
FIGURE 3.2-1. Data File
When EDLOG compiled WS1.dld, it also
created the Final Storage Label file, WS1.FSL
which lists the final storage locations for each
data element (Figure 3.2-2).
FIGURE 3.2-2. FSL file