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Q: Can you help me with a DYO that does the following:
Red dot: When upper BB is below upper Keltner Channel, and lower BB band is above lower Keltner channel. A: 
Global Variables (GV) are just temporary places to store values. So Lines A through D read the study band values and park them in GV [1] through [4]. Now they are available for testing in Lines E though J.
Line F reads the Value in Read GV [1] which is the Bol Upper Band and compares it to the content of the [3] which is the Kel Upper Band. This is a Boolean test that is True or False and the result is stored in GV [5] for use later on.
Line G is the test for the Bol Lower Band being below the Kel Lower Band. This result is stored in GV [6] for use later on.
Line H now does the AND operation on [5] and [6], the set size for the AND is the number 2 and the set begins in position 5 from the Read GV value. When the result of AND between [5] and [6] is True, the Green dot is plotted.
Lines H, I, and J are the mirror image to the logic to test for both Bol bands to be inside of the Kel bands, and show a Red dot when this is the case. As shown on the chart, nothing is drawn when the bands are in transition between being fully inside or fully outside. Last modified 1/31/08 2:26 PM |