Recode - Set Low Values to Missing in Numeric Variable(s)

Recode variable(s) so that any value less than or equal to a specified value is set as missing data This QScript allows you to recode questions so that any value less than or equal to a specified value is set as missing data. You will be asked to specify the questions to recode.

Example

If you enter a value of 10, all values less than or equal to 10 will be set as missing data.

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.

Customizing QScripts in Q4.11 and more recent versions

• 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

• Copy the JavaScript shown on this page.
• Create a new text file, giving it a file extension of .QScript. See here for more information about how to do this.
• Modify the JavaScript (see QScripts for more detail on this).
• Run the file using Automate > Run QScript (Macro) from File.

JavaScript

includeWeb('QScript Selection Functions');
includeWeb('QScript Functions to Generate Outputs');
includeWeb('QScript Value Attributes Functions');

main();

function main() {

    var selected_datafiles = dataFileSelection();

    var relevant_questions = getAllQuestionsByTypes(selected_datafiles, ["Number", "Number - Multi"]);

    // Question selection
    var selected_questions = selectManyQuestions("Please select the questions to recode:", relevant_questions).questions;
    var num_selected = selected_questions.length;

    // Recoding input
    var message = "Recode all values as missing data if they are less than or equal to:";
    var min = prompt(message);

    // Recoding
    for (var j = 0; j < num_selected; j++)
        setLowValuesToMissing(selected_questions[j], min);

    generateGroupOfSummaryTables("Recoded questions", selected_questions);
    log('A group of tables showing the recoded questions has been added to your report.')
}

See also

• QScript for more general information about QScripts.
• QScript Examples Library for other examples.
• Online JavaScript Libraries for the libraries of functions that can be used when writing QScripts.
• QScript Reference for information about how QScript can manipulate the different elements of a project.
• JavaScript for information about the JavaScript programming language.
• Table JavaScript and Plot JavaScript for tools for using JavaScript to modify the appearance of tables and charts.