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84 Entering, Editing, and Managing Data Chapter 3
Editing Data and Tables
Then, when you open it in JMP, you will see Locked File in the table panel underneath the table’s
name, as shown in Figure 3.42.
Figure 3.42 A Locked File
Indicates that the
file is locked and
tells you where the
file is located on
your computer
If a file is locked in both ways described above, unlocking the file by selecting Lock Data Table from
the table panel also removes its “Read-Only” setting.
Note: You can lock a column in place so when you scroll horizontally, the column remains visible. See
“Locking Columns in Place,” p. 138, for details.
Adding Table Variables
Table variables are character strings that are available to the entire table. They are any constant value
that is always available in the data table. Table variable names are displayed in the table panel at the left
of the data grid, as shown in Figure 3.43.
Figure 3.43 Table Variables are Located to the Left of the Data Grid
Table variables
Table variables are mostly used to document tables. For example, when you installed JMP, a folder
named Sample Data was also installed. Many files in the Sample Data folder contain a table variable
called Notes, which contain descriptive information. The example in Figure 3.43 shows a data table
that contains Notes as one of its table variables. JMP also automatically creates table variables when you
create a design table with the Design of Experiments commands in JMP. The design table has a table
variable named Design with the name of the design type as its value.
Table variables can also be incorporated in formulas you build using the formula editor, as shown in
Figure 3.44. These formulas calculate values for a column by referring to a table variable. See
“Referencing Columns and Table Variables,” p. 288, for details about constructing a formula that uses
table variables.