# Create New Variables - Scale Variable(s) - Center Within Case

Save variable(s) that are scaled to have a mean of 0 for each case

This QScript transformation creates a new questionvariable set for each selected questionvariable set, where the data in the new questionvariable set is centered within each case.

## Example

Consider the data below

For each row in the data, centering within case will subtract the mean for the row from each entry in the row to yield the following

## How to apply this QScript

• Start typing the name of the QScript into the Search features and data box in the top right of the Q window.
• Click on the QScript when it appears in the QScripts and Rules section of the search results.

OR

• Select Automate > Browse Online Library.
• Select this QScript from the list.

## Customizing the QScript

This QScript is written in JavaScript and can be customized by copying and modifying the JavaScript.

• Start typing the name of the QScript into the Search features and data box in the top right of the Q window.
• Hover your mouse over the QScript when it appears in the QScripts and Rules section of the search results.
• Press Edit a Copy (bottom-left corner of the preview).
• Modify the JavaScript (see QScripts for more detail on this).
• Either:
• Run the QScript, by pressing the blue triangle button.
• Save the QScript and run it at a later time, using Automate > Run QScript (Macro) from File.

### Customizing QScripts in older versions

includeWeb("QScript Scale Functions");