About the Filter node

The Filter node (BqlFilter Node) allows you to filter a series of data using a Bql predicate expression. For example, you can use an expression such as: value > 80 to show only values greater than 80 or timestamp in bqltime.yesterday to limit values to those recorded on the previous day.

To use the FilterNode component, drag it from the Series Transform palette onto the wiresheet view and connect a HistorySource output to the Filter Inputs slot. Double-click on the Filter component in the wiresheet view and use the Filter dialog box to create a custom bql query.

Figure 38. Set the Filter values in the Filters dialog box

Connect the output from the Filter node to another SeriesTransform node input or directly to a Terminal Node input as desired.

Figure 39. Filter node on the wiresheet view

Resolve the graph and check that the table displays the expected time values as defined by the query set in the Filter dialog box.