Agriculture Reference
In-Depth Information
results to a file. If you wish to view one of these logs, it will appear in a
Viewer window when loaded. I will have more to say about log files later.
The command entry region at the bottom of the Main window is
where all of the commands are typed for manipulating data and mak-
ing statistical calculations. You type a command here and when you
hit return, and assuming there is no error in what you have typed,
both the command and the results appear in the results region above.
The next area of the Main window is the Review region. This is
where all the typed commands appear as well as error codes if the
command is incorrect in some fashion. The Review has an error col-
umn that has the heading _rc, for return codes. You can adjust the
width of this region by sliding the vertical bar between this region
and the Results region. The width of the _rc column also can be
adjusted in the header. Finally, the Review region has its own search
function. Click on the magnifying glass icon at the top of this region.
An interesting feature of this region is, when clicking on a previously
typed command, it will then enter it in the Command region. Then
you just have to hit return and the command is executed. Although
I've been talking about typing commands to get results, you can use
the menus to select your command. A dialog box appears and you fill
in the parameters and hit OK. The command is entered in the Review
area just as if you typed it in the Command region.
The next region of the Main window is the Variables list where all
of the variables in the currently loaded dataset are listed. In addition,
any labels associated with a particular variable are listed. The variable
type and format are below the list in the Properties region of the main
menu. Selecting the column to the left of a variable in the Variables
list will automatically enter it in the Command region. This can be
helpful if you are executing a previously entered command, but are
changing one or more of the variables.
The Data Editor is a spreadsheet-like window where data can be
entered (Figure 1.5). The Data Editor can be opened for editing or
browsing by selecting one of the two icons in the main window (see
Figure 1.1). For example, census data or a database of important med-
ical information, whose integrity should not be compromised, can be
opened for browsing and not be inadvertently changed. This is rarely
the case in agricultural statistics where planned experiments of com-
paratively smaller datasets are involved. In addition, the Data Editor
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