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Jose,
I put your MetaStock formula in an Excel Spreadsheet. Works perfectly. I
am just trying to understand why, but I will get that eventually. Have to
knock some of the rust off the gears.
Thank you. That is a very helpful little formula.
Best,
Larry Carhartt
MasterDATA
The Only Source for Index & ETF Composite/Breadth Reports, Charts & Data
www.MasterDATA.com
lc@xxxxxxxxxxxxxx
818-701-6686
-----Original Message-----
From: equismetastock@xxxxxxxxxxxxxxx [mailto:equismetastock@xxxxxxxxxxxxxxx]
On Behalf Of Jose Silva
Sent: Friday, September 16, 2005 11:53 AM
To: equismetastock@xxxxxxxxxxxxxxx
Subject: [EquisMetaStock Group] Re: Percentage Change Chart
Gene, a basic Rate Of Change (ROC) can do this to some extent:
ROC(C,10,%)
Another choice would be the Price Oscillator:
OscP(1,10,E,%)
Note that there is an issue that plagues price-to-percentage
conversions: normalization. If an ETF moves from 50 to 100 points
(100% increase), and then back to 50 pts again (50% decrease), most
ROCs will plot a total net increase of around +50% (instead of 0% net ).
For a perfect $ to % conversion (and comparing apples to apples), take
a look at the URSC kit:
http://www.metastocktools.com/URSC/URSC.htm
jose '-)
http://www.metastocktools.com
--- In equismetastock@xxxxxxxxxxxxxxx, "Gene Asken" <dahbull@xxxx>
wrote:
> In the September issue of Stocks, Futures & Options (SFO), Deron
> Wagner in his article "Profit From Sector ETF Trend Divergence,"
> presents two "percentage change" charts with an overlay of an ETF
> vs. S&P 500 as a means of pinpointing divergences between the two.
> This would entail changing the Y-axis from price to percentage so
> the relationship between the ETF and the index remains correlated,
> apples to apples. Is there a way to do this in Metastock?
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