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Bellamy,
Thank you for the detailed explanation... I mentioned to Pablo the
possibility of using the Above/Below count as the numerator, and the
total lookback count as the denominator - this would yield a
percentage... possibly an easier way to interpret the plot?
Thanks again,
M
--- In equismetastock@xxxxxxxxxxxxxxx, "bellamy_29m" <bellamy_29m@xxx>
wrote:
>
> Without getting into an argument about the value of x/0: think about
> the problem in a slightly different way...
>
> What if in 10 days there was:
> 5 days above the EMA and 5 days below the EMA
> => the ratio is 5/5 = 1.0
>
> 6 days above the EMA and 4 days below the EMA
> => the ratio is 6/4 = 1.5
>
> 7 days above the EMA and 3 days below the EMA
> => the ratio is 7/3 = 2.3
>
> 8 days above the EMA and 2 days below the EMA
> => the ratio is 8/2 = 4.0%
>
> 9 days above the EMA and 1 day below the EMA
> => the ratio is 9/1 = 9.0
>
> 10 days above the EMA and 0 days below the EMA
> => the ratio is 10/0 is undefined, but all you care about is that it
> is bigger than 9. Why generate errors when you do not need to? So
> lets call it 10/1 = 10.0
>
> If in x days, the ratio value is x, then all of the days are above the
> EMA. If in x days there were x-1 days above the EMA and the remaining
> one day was below the EMA, the ratio value will be x-1.
>
> There is a very big difference between just hammering away with
> numbers, and understanding precisely what the numbers are showing you.
> There is no difference between your ratio spiking off to inifinity
> and mine going to x, but mine wont cause MetaStock to generate errors.
>
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