Comments on: Standard Deviation Price Change

By: John Gengler

John Gengler — Tue, 22 Nov 2011 21:09:36 +0000

Nice formula for price spikes in stdevs. Now I would like to get a 25 period moving average of those price spikes and display that moving average as a histogram too. Would you write the code for that?

By: Standard Deviation Price Change » ThinkScripter | marketHEIST.com

Standard Deviation Price Change » ThinkScripter | marketHEIST.com — Tue, 25 May 2010 01:09:32 +0000

[...] FREE per code listed for copy & paste Get It [...]

By: ThinkScripter

ThinkScripter — Fri, 19 Feb 2010 13:55:12 +0000

I’m not sure what you mean by 5 day spike? You will get a better response if you post questions in the forum rather than here in the comments.
-Eric

By: doodelzack

doodelzack — Fri, 19 Feb 2010 08:33:05 +0000

Please could anyone help? Is this correct for a 5 day price spike for 60 days?
declare lower;
input length = 60;
def closeLog = Log(close[1] /close[5]);
def astd = stdev(closeLog, length) * Sqrt(length / (5));
def m = astd * close [1];
plot spike = (close[0]- close [5]) / m;
spike.setPaintingStrategy(paintingStrategy.HISTOGRAM);
spike. AssignValueColor(if close > close[5] then Color.UPTICK else if close < close[5] then Color.DOWNTICK else GetColor(1));
plot zero = 0;
zero.setDefaultColor(color.black);
plot one = 1;
one.setDefaultColor(color.red);
plot two = -1;
two.setDefaultColor(color.red);
plot three = 0.5;
three.setDefaultColor(color.blue);
plot four = -0.5;
four.setDefaultColor(color.blue);

Many Thanks
Dz

By: doodelzack

doodelzack — Tue, 16 Feb 2010 08:54:29 +0000

So is this correct for a 5 day price spike for 60 days?
declare lower;
input length = 60;
def closeLog = Log(close[1] /close[5]);
def astd = stdev(closeLog, length) * Sqrt(length / (5));
def m = astd * close [1];
plot spike = (close[0]- close [5]) / m;
spike.setPaintingStrategy(paintingStrategy.HISTOGRAM);
spike. AssignValueColor(if close > close[5] then Color.UPTICK else if close < close[5] then Color.DOWNTICK else GetColor(1));
plot zero = 0;
zero.setDefaultColor(color.black);
plot one = 1;
one.setDefaultColor(color.red);
plot two = -1;
two.setDefaultColor(color.red);
plot three = 0.5;
three.setDefaultColor(color.blue);
plot four = -0.5;
four.setDefaultColor(color.blue);

Many Thanks
D

By: joseph

joseph — Sat, 13 Feb 2010 17:11:13 +0000

Ok there was an extra parenthesis, TOS now has no invalid entries. When i go to add the study to a chart it does not plot. i can’t figure that out. the first indicator listed in this post works well it plots just fine , but the one that factors in the N-1 weighting does not plot. This is after I typed in the code exactly.

thank you

By: joseph

joseph — Sat, 13 Feb 2010 16:34:52 +0000

I typed in the code verbatum and the line: def SDev = stdev(closeLog, length)* Sqrt(length / (length – 1)); is invalid in TOS. I did not copy and paste. Why is TOs not recognizing this

thank you

By: HANDNGLOVE

HANDNGLOVE — Fri, 18 Sep 2009 03:37:09 +0000

That fixed it thanks.
The Running Tom’s AugenIndicator with the N-1 weighting makes a massive difference if you are looking for moves outside of 2 standard deviations.
Much better accuracy. Thanks Eric and Tom!

By: ThinkScripter

ThinkScripter — Thu, 17 Sep 2009 11:56:32 +0000

The text editor in TOS sometimes has problems pasting in text from a web browser. If this happens, you’ll need to go in to the code and remove some hidden carriage returns around the semicolons. These hidden characters will manifest themselves as all kinds of script errors having nothing to do with the real syntax of the script.
-Eric

By: HANDNGLOVE

HANDNGLOVE — Thu, 17 Sep 2009 10:55:21 +0000

Tom
I am unable to get your study to be recognized
I get invalid statement which leads to no such variable.

and at least one plot needs to be defined.
Can you clarify