Covert TradeStation EasyLanguage to ThinkScript

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sunnyr

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Does anyone know how to convert thinkscript to easylanguage? I was going to attempt this myself but it is taking too long. I am looking to convert around 15 indicators almost all of them are mashups of indicators from here that I have modified to create a successful system scalping TSLA options. Here is my current grid for anyone interested. It is complete however I am working on cutting some fat.

Grid Link: http://tos.mx/k3eswoE
 
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There's a few codes in here could someone convert these, heres the link to the file

http://traders.com/Documentation/FEEDbk_docs/2015/09/TradersTips.html

In “Decyclers” in this issue, author John Ehlers describes a method for constructing an oscillator that can help traders detect trend reversals with almost no lag. Ehlers calls this new oscillator a decycler. The author begins the process by isolating the high-frequency components present in the input data. He then subtracts these from the input data leaving only the lower-frequency components representing the trend.

For convenience, we are providing some EasyLanguage code for the simple decycler and decycler oscillator indicators based on Ehlers’ concepts. In addition, we are providing code for a TradeStation function to calculate the decycler oscillator, and a strategy that demonstrates the function’s usage.

Indicator: Simple Decycler
Code: 
// TASC Sep 2015
// Decyclers - John F. Ehlers
// Simple Decyclers

inputs:
    HPPeriod( 125 ) ;
   
variables:
    alpha1( 0 ),
    HP( 0 ),
    Decycle( 0 ) ;
   
// High Pass Filter
alpha1 = ( Cosine ( 0.707 * 360 / HPPeriod ) +
Sine( 0.707 * 360 / HPPeriod ) - 1 )
/ Cosine( .707 * 360 / HPPeriod ) ;

HP = ( 1 - alpha1 / 2 ) * ( 1 - alpha1 / 2 ) *
( Close - 2 * Close[1] + Close[2] ) + 2 *
( 1 - alpha1 ) * HP[1] - ( 1 - Alpha1 ) *
( 1 - alpha1 ) * HP[2] ;       

Decycle = Close - HP ;

Plot1( Decycle, "DeCycle" ) ;
Plot2( 1.005 * Decycle, "UpperBand" ) ;
Plot3( 0.995 * Decycle, "LowerBand" ) ;       
   


Indicator: Decycler Oscillator

// TASC Sep 2015
// Decyclers - John F. Ehlers
// Decycler Oscillator

inputs:
    HPPeriod( 125 ),
    K( 1 ) ;
   
variables:
    alpha1( 0 ),
    alpha2( 0 ),
    HP( 0 ),
    Decycle( 0 ),
    DecycleOsc( 0 ) ;
   

alpha1 = ( Cosine ( 0.707 * 360 / HPPeriod ) +
Sine( 0.707 * 360 / HPPeriod ) - 1 )
/ Cosine( .707 * 360 / HPPeriod ) ;

HP = ( 1 - alpha1 / 2 ) * ( 1 - alpha1 / 2 ) *
( Close - 2 * Close[1] + Close[2] ) + 2 *
( 1 - alpha1 ) * HP[1] - ( 1 - Alpha1 ) *
( 1 - alpha1 ) * HP[2] ;       

Decycle = Close - HP ;


alpha2 = ( Cosine( 0.707 * 360 / ( 0.5 * HPPeriod ) )
+ Sine( 0.707 * 360 / ( 0.5 * HPPeriod ) ) - 1) /
Cosine( 0.707 * 360 / ( 0.5 * HPPeriod ) ) ;

DecycleOsc = ( 1 - alpha2 / 2 ) * ( 1 - alpha2 / 2 ) *
( Decycle - 2 * Decycle[1] + Decycle[2] ) + 2 *
( 1 - alpha2 ) * DecycleOsc[1] - ( 1 - alpha2 ) *
( 1 - alpha2 ) * DecycleOsc[2] ;


Plot1( 100 * K * DecycleOsc / Close, "DecycleOsc" ) ;
Plot2( 0, "ZeroLine" ) ;



Function: DecyclerOscillator

// TASC Sep 2015
// Decyclers - John F. Ehlers
// Decycler Oscillator Function

inputs:
    Price( NumericSeries ),
    HPPeriod( NumericSimple ),
    K( NumericSimple ) ;
   
variables:
    alpha1( 0 ),
    alpha2( 0 ),
    HP( 0 ),
    Decycle( 0 ),
    DecycleOsc( 0 ) ;
   
// High Pass Filter
alpha1 = ( Cosine ( 0.707 * 360 / HPPeriod ) +
Sine( 0.707 * 360 / HPPeriod ) - 1 ) /
Cosine( .707 * 360 / HPPeriod ) ;

HP = ( 1 - alpha1 / 2 ) * ( 1 - alpha1 / 2 ) *
( Price - 2 * Price[1] + Price[2] ) + 2 *
( 1 - alpha1 ) * HP[1] - ( 1 - Alpha1 ) *
( 1 - alpha1 ) * HP[2] ;       

Decycle = Price - HP ;

alpha2 = ( Cosine( 0.707 * 360 / ( 0.5 * HPPeriod ) )
+ Sine( 0.707 * 360 / ( 0.5 * HPPeriod ) ) - 1) /
Cosine( 0.707 * 360 / ( 0.5 * HPPeriod ) ) ;

DecycleOsc = ( 1 - alpha2 / 2 ) * ( 1 - alpha2 / 2 ) *
( Decycle - 2 * Decycle[1] + Decycle[2] ) + 2 *
( 1 - alpha2 ) * DecycleOsc[1] - ( 1 - alpha2 ) *
( 1 - alpha2 ) * DecycleOsc[2] ;

DecyclerOscillator = 100 * K * DecycleOsc / Price ;


Strategy: Decycler Oscillator

// TASC Sep 2015
// Decyclers - John F. Ehlers
// Decycler Oscillator Strategy

inputs:
    Price( Close ),
    Fast_HPPeriod( 100 ),
    Fast_K( 1.2 ),
    Slow_HPPeriod( 125 ),
    Slow_K( 1 ) ;

variables:
    Fast_Val( 0 ),
    Slow_Val( 0 ) ;

Fast_Val =
DecyclerOscillator( Price, Fast_HPPeriod, Fast_K ) ;

Slow_Val =
DecyclerOscillator( Price, Slow_HPPeriod, Slow_K ) ;

if Fast_Val crosses over Slow_Val then
    Buy next bar at Market
else if Slow_Val crosses over Fast_Val then
    SellShort next bar at Market ;
 
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Hi all, I'm hoping I can get help with converting a snippet of Easy Language to ThinkScript. This is for plotting potential trend reversals, and I'd like to make sure that the code mirrors the easy language. Here's the easy language code:
Code: 
variables:
    PlotDots(true),
    LookBack(4),
    Offset(.25);
if low < low[1] and close >= low + .5 * Range then
begin   
    if CountIf(low < low[1],LookBack + 1) = LookBack + 1
        then plot2(low - Offset * Average(Range,10),"Long+")
        else if PlotDots then plot1(low - Offset * Average(Range,10),"Long");
end;
I can't find very good references for Easy Language - it seems their documentation is spread all over PDFs and random old pages. Any help is appreciated!
 
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@pfriedl I'm guessing this 1272 page pdf is the most complete EasyLanguage reference available. https://uploads.tradestation.com/uploads/EasyLanguage-Functions-and-Reserved-Words-Reference.pdf

That code snippet isn't using any reserved words though except CountIf which works how you'd expect based on that code. It's being used to check if a condition is true on every bar for the last x bars. Then the code updates one plot or the other. If you need the look back to be a dynamic length using an input you'd need to use fold to loop. If a static length is fine then the code is simpler.

I think this is equivalent but definitely review/proofread this and test it thoroughly. It should at least get you close to what you need. Note that because of the .5 * range in that code the condition is only true on things that move enough in one candle, like /ES or other high priced tickers or using longer timeframes. Testing it on low price stocks on short timeframes it'll never be true.

Ruby: 
input PlotDots = yes;
#input LookBack = 4;
input Offset = .25;

# example code has a Range variable but its
# definition isn't included in the example
def Range = 1;

script lowMeetsCriteria {
  input index = 1;
  input range = 1;
  plot result = low < low[index] and close >= low + .5 * range;
}

def result =
  lowMeetsCriteria(1, Range)
  and lowMeetsCriteria(2, Range)
  and lowMeetsCriteria(3, Range)
  and lowMeetsCriteria(4, Range)
;

def value = low - Offset * Average(Range, 10);

plot p1 = if result != 1 then if PlotDots == 1 then value else Double.NaN else Double.NaN;
p1.SetDefaultColor(Color.WHITE);
p1.SetPaintingStrategy(PaintingStrategy.POINTS);

plot p2 = if result == 1 then value else Double.NaN;
p2.SetDefaultColor(Color.YELLOW);
 
Last edited:
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@Slippage OK, I was able to find a little more out here, thanks for the nudge!

Range is a function in TS: http://help.tradestation.com/10_00/eng/tsdevhelp/elword/function/range_function_.htm?Highlight=range
"The Range function subtracts the Low of a bar from the High to determine the range of the bar." so if the low was 100 and the high was 102, then the Range would end up being102-100 = 2.

From the definition of Low() http://help.tradestation.com/10_00/eng/tsdevhelp/elword/word/low_reserved_word_.htm?Highlight=low

Code: 
if low < low[1] and close >= low + .5 * Range then begin ... end;

is only comparing the current candle "low" to the last candle "low[1]" and if it's lower and the last candle close is greater than the current low + half the current range, then the conditional would be true and it would continue into the nested if statement.

Once it passes that initial test, we hit the CountIf. and CountIf looks like it actually returns the number of times a statement is true over N candles as opposed to returning true/false if all or none of the conditions were met.

So whether that test fails or not, it's still rendering a plot, but with just a difference in the label (Long vs Long+)?
 
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Yeah, you're right. I messed up where that first condition is. For CountIf, look at the entire if condition. It's checking if the count equals all the bars it looked at. Here's an update with fixes but I don't see any cases on my charts where it's true (yellow plot) now. Do you have any example symbol and date/time it should find something?

Ruby: 
input PlotDots = yes;
input Offset = .25;

def range = high - low;

def result =
  low < low[1] and close >= low + .5 * range
  and low[1] < low[2]
  and low[2] < low[3]
  and low[3] < low[4]
  and low[4] < low[5]
;

def value = low - Offset * Average(range, 10);

plot p1 = if result != 1 then if PlotDots == 1 then value else Double.NaN else Double.NaN;
p1.SetDefaultColor(Color.WHITE);
p1.SetPaintingStrategy(PaintingStrategy.POINTS);

plot p2 = if result == 1 then value else Double.NaN;
p2.SetDefaultColor(Color.YELLOW);
p2.SetLineWeight(3);
 
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Okay, so close >= low + .5 * range is looking for a lower wick at least half the size of the bar. I found some on NFLX 1m chart from Friday. 3 of them. And none of them caused reversals. Two flagged sideways and one blew right through continuing lower. There's one with a reversal near the end of the day on AAL.
 
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Yeah I don't really see why you'd need the additional check - if it passes the first test, the second is just a conditional on how to paint the plot. I'd say the CountIf is basically looking for 5 straight bars of lower lows in order to show maybe a stronger potential for reversal? Not sure.
 
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pfriedl said:
CountIf is basically looking for 5 straight bars of lower lows in order to show maybe a stronger potential for reversal? Not sure.
Click to expand...
Yes, exactly. Making sure it's been in a down trend to reverse from. It looks like it may work well when the trend isn't stronger than usual. I gave it a name and kept it. I'll probably throw it on some charts and keep an eye on it to see how well it works.
 
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Can anyone help me convert a script from EasyLanguage to ThinkScript? I don't really know how to use EasyLanguage and I can't seem to figure out how to convert it into ThinkScript. Thanks!

Code: 
{StoRSI}
inputs: RSILen(13), StoLen(21), MA(3), MA2(5);
 
vars:   PV(0), pvt(0), pvb(0);
vars:   OverBought(80), OverSold(20), Middle (50);
Vars:   Sum(0), Counter(0);
 
pvt = RSI(Close, RSILen) - Lowest(RSI(Close, RSILen), STOLen);
pvb = Highest(RSI(Close, RSILen), STOLen) - Lowest(RSI(Close, RSILen), STOLen);
 
Sum = 0;
For counter = 0 To MA - 1 Begin
    pvt = (RSI(Close, RSILen) - Lowest(RSI(Close, RSILen), STOLen)) of counter bars ago;
    pvb = (Highest(RSI(Close, RSILen), STOLen) - Lowest(RSI(Close, RSILen), STOLen)) of counter bars ago;
 
    PV = iff(pvb > 0, pvt/pvb, 0);
    Sum = Sum + PV;
End;
 
PV = iff(MA > 0, Sum / MA, 0);
 
plot1(PV*100, "StoRSI");
plot2(average(PV,MA2)*100, "StoRSI2");
plot3(OverBought, "OB");
plot4(OverSold, "OS");
Plot5(Middle, "M");
 
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Hi There, I am also trying to translate the same indicator. But I am stuck with the loop counter. Does anyone know how to translate a loop in thinkscript?

For counter = 0 to MA - 1 Begin
pvt = RSI(Close, RSILen) - Lowest(RSI(Close, RSILen), STOLen) of counter bars ago;
pvb = Highest(RSI(Close, RSILen), STOLen) - Lowest(RSI(Close, RSILen), STOLen) of counter bars ago;
End;
 
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sunnyr said:
Does anyone know how to convert thinkscript to easylanguage? I was going to attempt this myself but it is taking too long. I am looking to convert around 15 indicators almost all of them are mashups of indicators from here that I have modified to create a successful system scalping TSLA options. Here is my current grid for anyone interested. It is complete however I am working on cutting some fat.

Grid Link: http://tos.mx/k3eswoE
Click to expand...
Can you please explain exactly how do you use this or if there is a video link explaining how to use it?
 
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sunnyr said:
Does anyone know how to convert thinkscript to easylanguage? I was going to attempt this myself but it is taking too long. I am looking to convert around 15 indicators almost all of them are mashups of indicators from here that I have modified to create a successful system scalping TSLA options. Here is my current grid for anyone interested. It is complete however I am working on cutting some fat.

Grid Link: http://tos.mx/k3eswoE
Click to expand...
It looks to me someone would have written a program to automatically convert a study or strategy from one trading language to another! Has anyone researched this?
 
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Last edited:
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Hi all is there anyone who can help me convert this easy language indicator to thinkscript. This if for MTF indicator.


Code: 
Inputs:tf1Mult(2),tf2Mult(3),tf3Mult(4),tf4Mult(5);

vars: mtf1h(0),mtf1l(0),mtf1o(0),mtf1c(0),mtf1pvt(0),diff1(0),
      mtf2h(0),mtf2l(0),mtf2o(0),mtf2c(0),mtf2pvt(0),diff2(0),
      mtf3h(0),mtf3l(0),mtf3o(0),mtf3c(0),mtf3pvt(0),diff3(0),
      mtf4h(0),mtf4l(0),mtf4o(0),mtf4c(0),mtf4pvt(0),diff4(0),
      mtf0pvt(0),diff0(0);


If barNumber > 1 then
Begin
    
    mtf0pvt = (close + high + low) / 3;
    diff0 = close - mtf0pvt;
    
    mtf1h = highest(h,tf1Mult);
    mtf1l = lowest(l,tf1Mult);
    mtf1c = close;
    
    mtf1pvt = (mtf1h+mtf1l+mtf1c) / 3;
    diff1 = mtf1c - mtf1pvt;
    
    mtf2h = highest(h,tf2Mult);
    mtf2l = lowest(l,tf2Mult);
    mtf2c = close;
    
    mtf2pvt = (mtf2h+mtf2l+mtf2c) / 3;
    diff2 = mtf2c - mtf2pvt;
        
    mtf3h = highest(h,tf3Mult);
    mtf3l = lowest(l,tf3Mult);
    mtf3c = close;
    
    mtf3pvt = (mtf3h+mtf3l+mtf3c) / 3;
    diff3 = mtf3c - mtf3pvt;
    
    mtf4h = highest(h,tf4Mult);
    mtf4l = lowest(l,tf4Mult);
    mtf4c = close;

    mtf4pvt = (mtf4h+mtf4l+mtf4c) / 3;
    diff4 = mtf4c - mtf4pvt;
    
    Condition10 = diff0 > 0;
    Condition11 = diff1 > 0;
    Condition12 = diff2 > 0;
    Condition13 = diff3 > 0;
    Condition14 = diff4 > 0;
    
    If condition10 then setPlotColor(1,Green) else SetPlotColor(1,Red);
    If condition11 then setPlotColor(2,Green) else SetPlotColor(2,Red);
    If condition12 then setPlotColor(3,Green) else SetPlotColor(3,Red);
    If condition13 then setPlotColor(4,Green) else SetPlotColor(4,Red);
    If condition14 then setPlotColor(5,Green) else SetPlotColor(5,Red);
    
    condition6 = condition10 and condition11 and condition12 and condition13 and condition14;
    Condition7 = not(condition10) and not(condition11) and not(condition12) and not(condition13) and not(condition14);

    If condition6 then setPlotColor(7,Green);
    If condition7 then setPlotColor(7,Red);
    
    If condition6 or condition7 then plot7(7,"trend");

    Plot6(5,"line");   
    Plot1(4,"t1");
    Plot2(3,"t2");
    Plot3(2,"t3");
    Plot4(1,"t4");
    Plot5(0,"t5");

end;
 
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