2004 May: InvFisherTransformRSI.efs

[augustus]

Hi Jason,

if i use this indicator on an intraday-chart, it has a lag of one bar. I compared with other programms (TS) and they show no lag on intraday-charts.

Same for the Cyber-Cycle.

[eSignal_JasonK]

Hello augustus,

The formulas are using setComputeOnClose() in preMain(), which creates this one-bar lag.

[sporadic]

Jason,

Is there anyway to eliminate the one-bar lag on an intraday chart? I use 1, 3, and 5 min charts and the lag is causing some indecisiveness on my part.

- Hugh

[eSignal_JasonK]

Hello Hugh,

Yes most likely. For starters you can try removing the setComputeOnClose() function from preMain(). I have a feeling that may not be the solution, but I'll look into tomorrow and see what we can do.

[eSignal_JasonK]

Hello Hugh,

Removing setComputeOnClose() for InvFisherTransformRSI.efs works fine. I've updated the formula in the main post. For the CyberCycle_InvFisherTrans.efs, some additional modifications were required. I've updated that formula as well. Download the new versions and let me know if you have any problems.

[tedsmith]

Jason,
First, I'm thankful I don't have to retype the script from my May issue, thanks.

I have some questions about the mechanics of the script:

What is Value1 used for? I don't see it referenced later.

I thought '+=' was a string concatenation operator in eSignal, not a self-referencing addition operator.
(EFS Function Reference states:
String Operators
+ //oncatenate
+= //append)

What exactly does this line do?
Value2 = WAverage = WtdSum / CumWt ;
I understand the division, but a double assignment? or is that an operator too?
According to the article it should be doing a Weighted Average, which I'm assuming this does, but I can't find WAverage in the EFS Function Reference Guide.

Sorry if these are basic questions.

Thanks,
Ted.

-function THEO( )

[eSignal_JasonK]

Hello Ted,

I'll try to answer your questions the best I can. TS Support originally developed this formula. They may need to provide a response to some of your questions.

What is Value1 used for? I don't see it referenced later.

You're correct. It isn't used for anything in the formula. It could be some remnant code used for testing during development that they forgot to remove.

I thought '+=' was a string concatenation operator in eSignal, not a self-referencing addition operator.

JavaScript is a soft-typed language, which means you don't have to explicitly define the data type of a variable. This allows the operators to be used with strings or numbers. In the case of +=, if it is used with numbers it adds the result to itself. If used with strings it performs concatenation.

var nNum = 5;
nNum += 1;
debugPrintln(nNum);

// nNum equals 6 

The above is the same as the following when dealing with numbers.

var nNum = 5;
nNum = nNum + 1;
debugPrintln(nNum);

// nNum equals 6 

With strings, += performs concatenation.

var sString = "Hello";
sString += " World";
debugPrintln(sString);

// sString equals "Hello World" 

The above is the same as the following.

var sString = "Hello";
sString = sString + " World";
debugPrintln(sString);

// sString equals "Hello World" 

What exactly does this line do?
Value2 = WAverage = WtdSum / CumWt ;

WAverage is just a variable name in the formula, it's not an EFS function. WAverage isn't being used in this formula either by the way. At any rate, this does the same thing as,

WAverage = WtdSum / CumWt ;
Value2 = WAverage; 

[TraderJen]

Question on Fisher transform RSI

Hi,
Great, thanks for posting this! Is there a way to add a line at both the +.5 and -.5 level?
thanks,
JJ

[ACM]

JJ
The efs already has them. See in preMain() the following statements
addBand(.5, PS_SOLID, 1, Color.black);
addBand(-.5, PS_SOLID, 1, Color.black);
Alex

[Bob A.]

InvFisherTransformCCI.efs??

Anyone know if there's an InvFisherTransformCCI efs available or in the works?

TIA,
Bob

[TraderJen]

re: Lines

hi,
Thank you for pointing that out! My charts have a black background, so didn't see the predrawn lines. Just changed the line color to cyan; looks great!
Thanks again,
JJ