Fun with ThinkScript
Posted by robert
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Re: Fun with ThinkScript May 16, 2014 03:29PM |
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linter
Hi, Robert -- great stuff and i can't believe how adept at it you are. anyway, sorry for a request being my first post on the forum, but what can you do?
I am using part of your very helpful ADX study with the slow stochastics indicator as a set up. I use 11, 11 for the ADX and 8, 3 for sto. The idea is a signal is fired when the ADX rises from beneath 20 to above 20 at roughly the same time as the sto rises from beneath 80 to over 80. I'm wondering if there's not a way to combine the two ideas into one that i could use as a custom column on my watch list and/or get some other kind of alert, so i don't have to keep flipping through screens from stock to stock and wearing out my already frazzled eyeballs to see where things stand.
I've attached a screen shot of the set up. It's the red line to the right.
And, actually, for the ADX, it'd be awesome if I could adjust the crossover number up or down a little. For instance, 18 might be better than twenty, just so I have time to get to the chart and study things before the combo fires.
What do you think? Possible? And, if so, is this anything you might want to take a thwack at?
If you have any questions, fire away!
OTOH, something like this might already be in ToS. If so, forgive my ignorance.
Hey, linter.
I believe this'll do what you ask.
Chart Indicator
input DI_length = 11;
input ADX_length = 11;
input ADX_Crossover = 20;
def DX = if (DIPlus(DI_length) + DIMinus(DI_length) > 0) then 100 * AbsValue(DIPlus(DI_length) - DIMinus(DI_length)) / (DIPlus(DI_length) + DIMinus(DI_length)) else 0;
def ADX = WildersAverage(DX, ADX_length);
input over_bought = 80;
input over_sold = 20;
input KPeriod = 8;
input DPeriod = 3;
input smoothingType = {Default SMA, EMA};
def SlowK = reference StochasticFull(over_bought,over_sold,KPeriod,DPeriod,high,low,close,3,smoothingType).FullK;
def signalup = if ADX crosses above ADX_Crossover and SlowK > over_bought then 1 else if SlowK > over_bought and signalup[1] == 1 then signalup[1] else 0;
def signaldn = if ADX crosses above ADX_Crossover and SlowK < over_sold then 1 else if SlowK < over_sold and signaldn[1] == 1 then signaldn[1] else 0;
plot arrowUP = if signalup and !signalup[1] then low * 0.9985 else Double.NaN;
arrowUP.SetPaintingStrategy(PaintingStrategy.BOOLEAN_ARROW_UP);
arrowUP.SetLineWeight(4);
arrowUP.SetDefaultColor(Color.GREEN);
plot arrowUP = if signalup and !signalup[1] then low * 0.9985 else Double.NaN;
arrowDN.SetPaintingStrategy(PaintingStrategy.BOOLEAN_ARROW_DOWN);
arrowDN.SetLineWeight(4);
arrowDN.SetDefaultColor(Color.PINK);
Watchlist Column
input DI_length = 11;
input ADX_length = 11;
input ADX_Crossover = 20;
def DX = if (DIPlus(DI_length) + DIMinus(DI_length) > 0) then 100 * AbsValue(DIPlus(DI_length) - DIMinus(DI_length)) / (DIPlus(DI_length) + DIMinus(DI_length)) else 0;
def ADX = WildersAverage(DX, ADX_length);
input over_bought = 80;
input over_sold = 20;
input KPeriod = 8;
input DPeriod = 3;
input smoothingType = {Default SMA, EMA};
def SlowK = reference StochasticFull(over_bought,over_sold,KPeriod,DPeriod,high,low,close,3,smoothingType).FullK;
def signalup = if ADX crosses above ADX_Crossover and SlowK > over_bought then 1 else if SlowK > over_bought and signalup[1] == 1 then signalup[1] else 0;
def signaldn = if ADX crosses above ADX_Crossover and SlowK < over_sold then 1 else if SlowK < over_sold and signaldn[1] == 1 then signaldn[1] else 0;
def UP = signalup and !signalup[1];
def DOWN = signalup and !signalup[1];
addlabel(UP, " " );
addlabel(Down, " " );
addlabel(!UP and !DOWN, " " );
assignbackgroundcolor(if UP then color.green else if DOWN then color.red else color.current);
- robert
Professional ThinkorSwim indicators for the average Joe
Edited 1 time(s). Last edit at 05/16/2014 03:37PM by robert.
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Re: Fun with ThinkScript May 16, 2014 03:35PM |
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NCTrader
Robert,
Excellent job on the code you have been able to develop. I know very little about TOS other than I want to throw the computer out the window every time I try to navigate the platform.
Yep. TOS certainly has its quirks, but for the low price of FREE, I'm pretty pleased with the capabilities that it does offer.
As to your coding suggestion, thank you so very much for chiming in. Any and all help is most appreciated. However, I thought about something similar and unless I'm missing something, that strategy would identify the last X number of calendar days when what I'm trying to identify is the last X number of trading days. That is to say, it won't take into account weekends or holidays if they fall in the last X window.
On the other hand, it's entirely possible that I'm just not understanding what you are trying to spoon-feed me.
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Re: Fun with ThinkScript May 16, 2014 06:24PM |
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linter
com.devexperts.tos.thinkscript.runtime.ScriptAndData$TooComplexException: The complexity of the expression suggests that it may not be reliable with real-time data.
My fault for not testing the code first. I just typed it up quickly and pasted it here. The "too complex exception" is because the indicator code is using a recursive variable which is fine on the charts, but is not supported in the watchlist columns. Sorry, I forgot about that limitation.
As to the "arrowUP" error message you received in the charting indicator, copy paste error on my part. Again, my fault for rushing through my responses this afternoon. Thanks for bringing it to my attention.
Corrected code.
input DI_length = 11;
input ADX_length = 11;
input ADX_Crossover = 20;
def DX = if (DIPlus(DI_length) + DIMinus(DI_length) > 0) then 100 * AbsValue(DIPlus(DI_length) - DIMinus(DI_length)) / (DIPlus(DI_length) + DIMinus(DI_length)) else 0;
def ADX = WildersAverage(DX, ADX_length);
input over_bought = 80;
input over_sold = 20;
input KPeriod = 8;
input DPeriod = 3;
input smoothingType = {Default SMA, EMA};
def SlowK = reference StochasticFull(over_bought,over_sold,KPeriod,DPeriod,high,low,close,3,smoothingType).FullK;
def SlowD = reference StochasticFull(over_bought,over_sold,KPeriod,DPeriod,high,low,close,3,smoothingType).FullD;
def signalup = if ADX crosses above ADX_Crossover and SlowK > over_bought then 1 else if SlowK > over_bought and signalup[1] == 1 then signalup[1] else 0;
def signaldn = if ADX crosses above ADX_Crossover and SlowK < over_sold then 1 else if SlowK < over_sold and signaldn[1] == 1 then signaldn[1] else 0;
plot arrowUP = if signalup and !signalup[1] then low * 0.9985 else Double.NaN;
arrowUP.SetPaintingStrategy(PaintingStrategy.BOOLEAN_ARROW_UP);
arrowUP.SetLineWeight(4);
arrowUP.SetDefaultColor(Color.GREEN);
plot arrowDN = if signaldn and !signaldn[1] then high * 1.0015 else Double.NaN;
arrowDN.SetPaintingStrategy(PaintingStrategy.BOOLEAN_ARROW_DOWN);
arrowDN.SetLineWeight(4);
arrowDN.SetDefaultColor(Color.PINK);
- robert
Professional ThinkorSwim indicators for the average Joe
Edited 1 time(s). Last edit at 05/16/2014 06:29PM by robert.
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Re: Fun with ThinkScript May 16, 2014 06:38PM |
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linter
what about the other one? have any idea what the problem is there?
see above
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Re: Fun with ThinkScript May 18, 2014 08:32AM |
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Gaterz
Is it possible to have the area between 2 moving averages shaded like in this video?
input ShortAvgLength = 20; input LongAvgLength = 50; plot MA1 = Average(close, ShortAvgLength); plot MA2 = Average(close, LongAvgLength); AddCloud(MA1, MA2);
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Re: Fun with ThinkScript May 20, 2014 06:05PM |
Robert, Thank you very much
Linter, yes the individual chart has to be open for the alarm to sound. The way I do it is I open up multiple charts on the flexible grid to watch multiple symbols at the same time and then I detach the layout in a separate window and don't minimize the detached window, just make it a little smaller so I can see the tabs on the main TOS. Then even if I navigate to other tabs or charts in TOS, I still get the alerts. Sometimes I have 30 or more charts open at the same time in flexible grid in the detached window and I get alerted anytime the programmed condition is triggered in any one of those symbols. I add the code to assign background color to light gray if the condition is met, so when the alert goes off I click the detached window in the task bar and immediately know which of the 30 symbols has been triggered.
assignbackgroundcolor(if ..... then color.light_gray else color.current);
Linter, yes the individual chart has to be open for the alarm to sound. The way I do it is I open up multiple charts on the flexible grid to watch multiple symbols at the same time and then I detach the layout in a separate window and don't minimize the detached window, just make it a little smaller so I can see the tabs on the main TOS. Then even if I navigate to other tabs or charts in TOS, I still get the alerts. Sometimes I have 30 or more charts open at the same time in flexible grid in the detached window and I get alerted anytime the programmed condition is triggered in any one of those symbols. I add the code to assign background color to light gray if the condition is met, so when the alert goes off I click the detached window in the task bar and immediately know which of the 30 symbols has been triggered.
assignbackgroundcolor(if ..... then color.light_gray else color.current);
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Re: Fun with ThinkScript May 21, 2014 10:21AM |
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mkaltenborn
Have you ever written any code aimed at the futures markets?
I barely understand stocks
I've never even looked at futures.
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Re: Fun with ThinkScript May 21, 2014 12:37PM |
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tanman
I guess if it is secondsfromtime it should be 60 instead of 60,000.
Good catch. You are 100% correct. I had milliseconds on the brain from working with AggregationPeriod, but SecondsFromTime uses actual seconds (duh).
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