Include Trend Property it's a QueryViewer control and a Query object property. It's only available when the Type property in QueryViewer control has the Card value assigned and allows indicating the trending of the returned data.
||Tending it's not shown. This is the default value.
||Trending it's shown with an arrow at the left of the value
If the Query object includes a Date or DateTime attribute, trending can be indicated by setting the Include Trend Property in True:
This it's calculated with the least squares method by adjusting a straight line to the Data of a defined period and calculating the slope of the curve (positive, negative or zero) and representing it with an arrow to the left of the value:
This property's available as of GeneXus 15.