In this tutorial, we’ll create an Indicator that automatically draws TrendLines in TradeStation.
Firstly, we calculate the maximum and the minimum of the last X candles or days.
This is only an example, you can create your trendline indicator simply replacing the HighestHigh and LowestLow value.
In EasyLanguage is possible to determine the Min-Max with two functions:
HighestHigh = Highest(High,BackHigh);
LowestLow = Lowest(Low,BackLow);
Drawing TrendLines by hand could be a boring activity. With TradeStation, you can create a Trendline Indicator that automated the process.
TLID = TL_New(StartDate, StartTime, StartValue, EndDate, EndTime, EndValue);
TLID is a variable that contains the TrendLine ID. This is a unique identifier and is useful if you will draw many trendlines in your chart.
TL_New is a reserved word that uses six parameters to draw a new trendline.
Inputs:
BackHigh (20),
BackLow (20);
Vars:
TL_HIGH(1),
TL_LOW(2),
HighestHigh(0),
LowestLow(0);
HighestHigh = Highest(High,BackHigh);
LowestLow = Lowest(Low,BackLow);
If lastbaronchart or lastbaronchartEX then
Begin
TL_HIGH = TL_New(Date[BackHigh], Time[BackHigh], HighestHigh, Date, Time, HighestHigh);
TL_LOW = TL_New(Date[BackHigh], Time[BackHigh], LowestLow, Date, Time, LowestLow);
End;
TrendLine Indicator Tradestation
Very simple! Do you like to personalize the TrendLines?
You can choose the color, the size, and the style.
TradeStation EasyLanguage TrendLine Indicator Code:
Inputs:
BackHigh (20),
BackLow (20),
TL_HIGH_COLOR(DarkGreen),
TL_LOW_COLOR(DarkRed),
TL_HIGH_SIZE(2),
TL_LOW_SIZE(2),
TL_HIGH_STYLE(2),
TL_LOW_STYLE(2);
Vars:
TL_HIGH(1),
TL_LOW(2),
HighestHigh(0),
LowestLow(0),
TimeStorage(0);
HighestHigh = Highest(High,BackHigh);
LowestLow = Lowest(Low,BackLow);
If lastbaronchart or lastbaronchartEX then
UpdateTrendLine
Begin
TL_HIGH = TL_New(Date[BackHigh], Time[BackHigh], HighestHigh, Date, Time, HighestHigh);
TL_SetColor(TL_HIGH,TL_HIGH_COLOR);
TL_SetSize(TL_HIGH,TL_HIGH_SIZE);
TL_SetStyle(TL_HIGH,TL_HIGH_STYLE);
TL_LOW = TL_New(Date[BackHigh], Time[BackHigh], LowestLow, Date, Time, LowestLow);
TL_SetColor(TL_LOW,TL_LOW_COLOR);
TL_SetSize(TL_LOW,TL_LOW_SIZE);
TL_SetStyle(TL_LOW,TL_LOW_STYLE);
End;
With the TradeStation TrendLine Indicator in Easyanguage you have to refresh the chart (Ctrl+R) when you want to redraw the trendlines.
Resources:
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