Using JMP - SAS

Chapter 5 Set Column Properties 145
The Column Info Window
Figure 5.3 Modeling Type Icons in the Columns Panel
ordinal
nominal
continuous
Click on an icon to change the modeling type.
Tip: You can select Continuous only if your data type is numeric. If the Continuous option is dimmed on
the menu and you want to make the column continuous, you must first change the column’s data type in
the Column Info window.
The Short-Integer Format
When you use the correct short-integer format for your data, you do not see any difference in how the
numbers appear, but the numbers occupy less disk space and use less memory. Short-integer formats must
be activated in preferences to appear in the Column Info window.
To make short-integer formats available in the Column Info window:
1. Select File > Preferences and click Tables.
2. Select the Allow short numeric data format option.
3. Click OK to return to the data table.
To store numeric data in short-integer format:
1. Double-click above the column name whose values you want to be short-integer.
The Column Info window appears.
2. From the Data Type menu, select 1-byte integer, 2-byte integer, or 4-byte integer.
JMP stores values as integers in the range that you selected. The following numbers are examples:
• For 1-byte integer, the range of numbers that you can enter is from -126 to 127.
• For 2-byte integer, the range of numbers that you can enter is from -32,766 to 32,767.
• For 4-byte integer, the range of numbers that you can enter is from -2,147,483,646 to 2,147,483,647.