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> I think "up" and "down" should be C - O. Up would then be positive
> (+) differences while "down" would be negative (-) differences.
Well, everything I know about this indicator is what you wrote in your
posting.
>
> The rest of your AFL makes sense to me. How would you incorporate the
> above into your AFL? Is IIF required?
You could change the code this way:
...
up=IIf(C>O,C-O,0);
down=IIf(C<O,O-C,0);
...
HTH.
Greetings, Thomas
>
> The rest of your AFL makes sense to me. How would you incorporate the
> above into your AFL? Is IIF required?
>
> --- In amibroker@xxxxxxxxxxxxxxx, Thomas Ludwig <Thomas.Ludwig@xxx> wrote:
> > Dave,
> >
> > perhaps something like this:
> >
> > Days=Param("Days",10,1,50,1);
> >
> > up=C>O;
> > down=C<O;
> > BP=Sum(up*V,Days);
> > SP=Sum(down*V,Days);
> >
> > PI=100*BP/(BP+SP);
> > Plot(PI,"Pressure Indicator", colorRed,styleLine);
> >
> > Greetings,
> >
> > Thomas
> >
> > > In the July issue of Active Trader, Tom DeMark discussed his TD
> > > Pressure Ratio indicator. Has anyone created the AFL for this
> > > indicator? Can you post the code?
> > >
> > > Here's a description of the indicator:
> > >
> > > <from AT Mag>
> > > Numerator is the sum of all the accumulation (days the close was above
> > > the open) over a certain number of days, multiplied by the volume -
> > > that is the "Buying Pressure".
> > >
> > > Note: "Selling Pressure" is the sum of all of the distribution over
> > > the same number of days, multiplied by the volume.
> > >
> > > Denominator is the absolute value of the sum of the Buying Pressure
> > > and Selling Pressure.
> > >
> > > The ratio gives you a measure of the Buying Pressure as a percentage
> > > of the total activity. This ratio (oscillator) should fluctuate from
> > > 0 to 100.
> > > </from AT Mag>
> > >
> > > He also discusses creating a cumulative version of the Pressure Ratio,
> > > similar to OBV.
> > >
> > >
> > >
> > > Please note that this group is for discussion between users only.
> > >
> > > To get support from AmiBroker please send an e-mail directly to
> > > SUPPORT {at} amibroker.com
> > >
> > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > > http://www.amibroker.com/devlog/
> > >
> > > For other support material please check also:
> > > http://www.amibroker.com/support.html
> > >
> > > Yahoo! Groups Links
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
Please note that this group is for discussion between users only.
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