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<< Click to Display Table of Contents >> Navigation: User Guide > Project definition > Filters > Filters introduction |
Filter entries define a subset of the questionnaires and are used for routing (filtering).
All filter entries are stored in the Project master (QDF) file.
Routing is achieved by applying filter entries to questions. Filter entries can also be applied to variables so that they only contain data for certain respondents.
Filters can be added from the Main window, by using the [Insert] menu, toolbar button, or the context menu (right click).
Details about the new filter are entered in the Entry details window. This window is used to add and update all entries, except program entries.
For filters and hold filters, see Entry details, filter.
Filters can be stored in the raw data file when a record is saved.
You do not need to close the Entry details after each new entry is inserted because there are toolbar buttons to add more new entries.
The order of entries in a project is very important, see Reference Manual, Entry rules, Entry order.
The controls available on the Entry details window vary depending on the type of entry being edited, for filters see:
You will need to filter some questions so that some respondents route past them:
Existing filters can be applied to tables in Tables setup and Data drill down.
You can apply new Filter details on individual tables and globally.
You can also create new filters in Drill Down but these will not be preserved.