Atttempting to convert Tradestation ELS into Thinkscript...

January 27th, 2019, 11:20 PM

I'm trying to convert a Tradestation ELS into Thinkscript. Here is the Tradestation code:

Code

inputs:
Length(20);

vars:
srsi(0),
srsin(0),
k(0);

srsin = 0;
For k = 0 to Length - 1
Begin
Value1 = absvalue(close[k] - open[k];
Value2 = absvalue(high[k] - low[k];
If value2 = 0 then value3 = 0
Else
Value3 = value1/value2;
srsin = srsin + value3;
End;

srsi = srsin/length;

plot1(0.38);
plot2(srsi);
plot3(-0.38);
plot4(0);
If srsi > 0 then Setplotcolor(2,green);
If srsi < 0 then Setplotcolor(2,red);
If srsi >= -0.05 and srsi <= 0.05 then Setplotcolor(2,yellow);

Setplotcolor(1,darkred);
Setplotcolor(3,darkgreen);
Setplotcolor(4,yellow);

Here is my attempt at converting it to Thinkscript:

Code

declare lower;

input Length = 20;

def srsi = 0;
def srsin = 0;
def k = 0;

plot iteration = fold k = 0 to Length - 1;

def Value1 = absvalue(close[k] - open[k]);
def Value2 = absvalue(high[k] - low[k]);
def Value = if value2 == 0 then value3 == 0 else value3 == value1 / value2;

def srsin = srsin + value3;

def srsi = srsin / Length;

plot line1 = 0.38;
line1.SetDefaultColor(Color.DARK_RED);
line1.HideTitle();
line1.HideBubble();

plot line2 = srsi;
line2.AssignValueColor(if srsi > 0 then Color.GREEN 
else if srsi < 0 then Color.RED 
else if srsi >= -0.05 and srsi <= 0.05 then Color.YELLOW 
else Color.GRAY);
line2.SetLineWeight(2);
line2.HideTitle();

plot line3 = -0.38;
line3.SetDefaultColor(Color.DARK_GREEN);
line3.HideTitle();
line3.HideBubble();

plot ZeroLine = 0;
ZeroLine.SetDefaultColor(Color.ORANGE);
ZeroLine.HideTitle();
ZeroLine.HideBubble();

The Thinkscript compiler says the fold statement is invalid. This is the first time I've attempted to work with a fold statement.

Any assistance would be greatly appreciated. Thanks in advance...

January 28th, 2019, 01:28 AM

I briefly looked at the online reference for 'fold'. Two possibilities:

1) In fold, a 'do' keyword is not optional...your code is missing it however.
2) You've got the variable k being defined before the fold, it may not need to be? A def in thinkscript means a variable that holds a value for each bar, like a plot but with no visualization. So, that's completely different from a loop counter. Try deleting that line if it still complains.

January 28th, 2019, 05:38 AM

ocpb

I briefly looked at the online reference for 'fold'. Two possibilities:

1) In fold, a 'do' keyword is not optional...your code is missing it however.
2) You've got the variable k being defined before the fold, it may not need to be? A def in thinkscript means a variable that holds a value for each bar, like a plot but with no visualization. So, that's completely different from a loop counter. Try deleting that line if it still complains.

@ocpb,

Thanks for the reply and the insights. I really appreciate it

Atttempting to convert Tradestation ELS into Thinkscript...

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Atttempting to convert Tradestation ELS into Thinkscript...