Process If
About Process If
Process If allows the ability to select portions of the data to be used. While Missing Values may be used remove values or ranges of the dependent variable used in calculations, Process If allows the ability to select data based on the value of any variable.
For example, if a variable called "Line" was included in the data file, setting:
Process if Line=1
would perform an analysis only for data when line was equal to 1.
Two Process If equations may be entered. These may both use the same variable or may use different variables.
To Select a Process If Configuration
- Select Data|Process If from the menu.
- The following form will be displayed. Click items on this picture to see their function.
- Select the variables in the Data Variables list and click the Selection Buttons to enter them into the Process If equation.
- Select the Operators to be used by clicking the Down Arrow next to the Operator. (“All” selects all values, negating the process if.)
- Enter values for the Process If equation.
To Deselect Process If
Any one of the following will deselect Process If.
- Remove the selected variables from the Process If equations.
- Select All as Operators.
- Click the Reset Button.
Data Variables
These are the variables that may be selected.
Process If Variables
Variables used in the Process If equation are displayed here.
Process If Operators
The operators, =, >, >=, <, <=, <>, which are used in the Process If equation.
Process If Values
These are the Values used in the Process If equation.
OK Button
Click this to Accept the Process If configuration.
Cancel Button
Click this to Cancel changes to the Process If configuration and exit.
Transform Help
Click this button to select help.
Selection Buttons
Selects the Data Variables for inclusion into the Process If equation.
Selection Buttons
Selects the Data Variables for inclusion into the Process If equation.
Process If Variables
Variables used in the Process If equation are displayed here.
Process If Operators
The operators, =, >, >=, <, <=, <>, which are used in the Process If equation.
Reset Button
Resets the Process If statements.
And/Or Selection
Select "And" or "Or" when using two Process If equations.
