AFL Function Reference

Miscellaneous functions
(AmiBroker 3.50)

SYNTAX	Study( STUDYID, CHARTID = 1, scale = -1 )
RETURNS	ARRAY
FUNCTION	generates an array equivalent to a trendline study drawn by the user - allows detecting trendline breakouts from AFL. STUDYID is a two-character identifier of the study. identifiers are: "UP" - uptrend, "DN" - downtrend, "SU" - support, "RE" - resistance, "ST" - stop loss, however you can use ANY identifiers (there are no limitations except that AmiBroker accepts only 2 letter codes). CHARTID - identifies the chart pane where the study was drawn - you can find out what is the chart ID for given chart by looking in Parameters dialog, Axes & Grid, Miscellaneous: Chart ID or using GetChartID() AFL function. Scale - this parameter specifies which scale should be used: scale = -1 : automatic (default value) - either linear or logarithmic depending on actual chart setting, chart is specified by chartID scale = 0 : linear scale scale = 1 : logarithmic scale More information about this function is included in the Tutorial: Using Studies in AFL formulas
EXAMPLE	`// this example plots filled area between // support (SU) and resistance (RE) lines Plot(C, "Price", colorBlack, styleCandle ); su = Study("SU", GetChartID() ); re = Study("RE", GetChartID() ); PlotOHLC( re, re, su, su, "", colorYellow,styleCloud );`
SEE ALSO	GETCHARTID() function

The Study function is used in the following formulas in AFL on-line library: