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# How does result filtering work?

You can use the Filter... button in the Result History Toolview ribbon menu to filter read results displayed in the view. Clicking the button enables filtering. To set up filtering parameters, open the options by clicking on the right side of the button.

Note: The Filter button only appears if the operating system supports it.

Two modes are available in filtering settings: standard filtering and advanced filtering. You can select either mode by the drop-down menu under General .

When using standard filtering, the filtering categories appear as active in the drop-down window (Result Status, Validation Method, Validation State, and Symbology). You can select individual filters under each category by clicking them. Once enabled, these filters are used on all future items in result history and also retroactively. Items not specified by filters are dropped from result history until filtering is disabled. Note that in standard filtering, a single good read result in a trigger sequence counts as a good read for the whole trigger sequence. Therefore, for example, standard filtering is not applicable to multicode scenarios; use advanced filtering scripts for multicode scenarios.

When using advanced filtering, standard filtering categories become inactive, and the Advanced filtering settings is activated in the drop-down window. Clicking it opens up a new window where you can edit filter expressions. If a predefined filter was enabled previously, the generated expression can be seen in the dialog here. Editing the expression does not have any backwards effect on the predefined filters.

The filter expression itself is a JavaScript function. Using data members of the result is the same as it is with script-based formatting. The result of the expression can be seen in the window at the bottom. In case of java script error, the error message is displayed in the text window. Note that despite the similarities, advanced filtering is not a dataformatting script, only a display filter running on Setup Tool.

Note: default, DM050, DMAE50, DM060, DM070, DM080, DM150, DM260, DM280, DM290, DM300, DM360, DM370, DM380, DM390, DM470, DM503, DM580, DM7500, DM8050, DM8070, DM8600, DM8700, MX-1000, MX-1500