Applying filters and contexts

Filters and contexts are used to show the report or analysis with a subset of the response data. There are two types of filters and contexts available to use in Snap Online:

• External filters and contexts. These are defined from the Analyses or Reports windows in Snap Desktop. Once defined, the filter or context can be applied to reports and analyses in both Snap Desktop and Snap Online. These are available as part of the survey and can be used every time the survey is opened.
• Custom filters and contexts. These are set up in Snap Online using a filter expression. You can use the variables section to check the variables and questions used in the questionnaire to help create the expression. These are temporary filters and contexts that are available while the survey is open but are removed when the survey is closed.

Using an external filter or context

Any analyses or reports that include external filters or contexts can use these to view a subset of the response data. To apply a filter to an analysis, use the following instructions:

1. In Snap Online, select the survey from Your work.
2. In the Summary tab, click the Analyze link. The reports and analyses are available here.

3. Select the report or analysis from the Reports or Tables and Charts menus.
4. To apply a filter to the selected report or analysis, select Filter & context in the side menu.
5. Click Add variable    to add a filter rule.
6. In the Select a variable list, select a variable to use as the filter then click Next.
7. Select the answers to use in the filter and click OK.

8. Click Apply changes to update the analysis of your response data for the selected filter.

Further information on the full process of setting up and using external filters can be found at Setting up filters for Snap Online analysis.

Set a custom filter or context

As well as using externally defined filters and contexts, you can create a custom filter or context. These are temporary and only available while the survey is selected in Snap Online.

1. In Snap Online, select the survey from Your work.
2. In the Summary tab, click the Analyze link. The reports and analyses are available here.
3. Select the report or analysis from the Reports or Tables and Charts menus.
4. To apply a filter to the selected report or analysis, select Filter & context in the side menu.
5. Click Set custom  to add a custom filter or context rule.
6. Enter the filter expression and click OK.

7. Click Apply changes to update the analysis of your response data for the selected filter.

Viewing variable details

Click on the Variables menu to view the variables available in the survey. The variable details help identify the questions, derived variables and paradata that can be used to build the custom filter expression.