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916 Chapter 14 6. Click OK. Position the left scooter at the very left edge of your trend. The left scooter is now complete. Duplicate the process for the right scooter using .ScooterPosRight. The value fields remain the same. Displaying Values at Scooter Positions To display values based on the current location of the scooter, create a numeric text object, for example, #.00 and assign it to a Value Display - Analog link with an expression. For example: HTGetValueAtScooter( "Trend1", Trend1.UpdateCount, 1, Trend1.ScooterPosLeft, 1, "PenValue" ) This example will retrieve the value for Pen1 at scooter position left on Trend1. If the slider is moved in Runtime, the Value Display - Analog link will automatically be updated with the new value at the new scooter location. Retrieving Values Between Zones To receive data between the scooters current location in the form of either, max value, min value, average value or standard deviation, create a numeric text object, for example, #.00, and assign an Value Display - Analog link with an expression. For example: HTGetValueAtZone( "Trend1", Trend1.UpdateCount, Trend1.ScooterPosLeft, Trend1.ScooterPosRight, 1, "PenMaxValue" ) This example will retrieve the Max value for Pen1 on Trend1 between scooter position left and scooter position right. Zooming In and Out To zoom in on the trend, create a button and assign it to a Touch Pushbutton Action link. Choose the On Button Down condition and enter the following QuickScript: HTZoomIn( "Trend1", "Center" ); This example will “anchor” the center time of the trend and the new chart width will equal the old chart width divided by two if the scooters are at the far left and right positions. If the scooters are moved, the new chart width is the time between scooter left and scooter right and the LockString (“Center”) is not used. For more information using historical QuickScript functions, see “Historical QuickScript Functions.” InTouch User’s Guide
