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 True Strength Index (TSI) Topic Rating:
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Bruce_L
 Posted : Tuesday, March 14, 2017 3:11:21 PM

Worden Trainer

Joined: 10/7/2004
Posts: 65,138

# True Strength Index (TSI)

This is the same as the SMI Ergodic Indicator.

## Template (v17+)

XAVG(XAVG(C - C1, s), l) / XAVG(XAVG(ABS(C - C1), s), l)

Where s is the short period.
Where l is the long period.

## Example

The following is the formula for a TSI3,9.

XAVG(XAVG(C - C1, 3), 9) / XAVG(XAVG(ABS(C - C1), 3), 9)

## Related Topics

-Bruce
Personal Criteria Formulas
TC2000 Support Articles
donv98
 Posted : Friday, March 17, 2017 11:27:16 AM
Registered User
Joined: 7/29/2010
Posts: 417

Bruce,

First the price change is calculated ie. C-C1

The way the above is written it looks like the short period smoothing is done before the long period  smoothing. Stockcharts.com has  the long period first,  then the short period.

Double Smoothed PC
PC = Current Price less Prior Price
First Smoothing = 25-period EMA of PC
Second Smoothing = 13-period EMA of 25-period EMA of PC

Double Smoothed Absolute PC
Absolute Price Change |PC| = Absolute Value of Current Price less Prior Price
First Smoothing = 25-period EMA of |PC|
Second Smoothing = 13-period EMA of 25-period EMA of |PC|

What am I  getting wrong here?

Thank you,

Don

Bruce_L
 Posted : Friday, March 17, 2017 11:29:22 AM

Worden Trainer

Joined: 10/7/2004
Posts: 65,138

The order of the smoothing doesn't matter.

XAVG(XAVGC13, 26) = XAVG(XAVGC26, 13)

-Bruce
Personal Criteria Formulas
TC2000 Support Articles
donv98
 Posted : Friday, March 17, 2017 11:35:17 AM
Registered User
Joined: 7/29/2010
Posts: 417

Bruce,

Thank you.

Don

Bruce_L
 Posted : Friday, March 17, 2017 11:44:24 AM

Worden Trainer

Joined: 10/7/2004
Posts: 65,138

You're welcome.

-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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