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Patrick,
>One note on the code Brian provided: the expression H-L used in
>Midpoint returns the range for only the last bar (day). As such,
>IMHO it is not useful for evaluating the midpoint of each day in
>the average range period. And while I didn't play with it much, I
>couldn't get it to function properly in an indicator (my apologies
>Brian if I missed something).
Yes, there was a mistake in my code.
Thanks for pointing that out and helping Grant get going.
>As such, I find that either the MA of Close or Average [ (H+L+C)/3 ]
>array are useful for an indicator such as I think you wanted.
Personally I use MidPoint more than (H+L+C)/3 but I have tried both -
Slightly different concepts (horses for courses?) - I am not exactly
sure what Grant's trading concept is on this one (it looks
interesting).
I am surprized that Tomasz doesn't have MP as a function but each to
their own.
Anything that works is OK by me.
brian_z
--- In amibroker@xxxxxxxxxxxxxxx, "NW Trader" <pk47hargus@xxx> wrote:
>
> Hi Grant,
>
> Several hours ago I posted a reply to you with code attached,
however it has yet to show up. Maybe I've been away so long that the
rules have changed, but no matter. I'll try again and just include
the code within the message. The following will plot the Average
Range as either points or percent of average Typical price
(selectable via the parameters menu (right click the chart, select
Parameters in the popup). Period for the average is also selectable
in Parameters. This uses a simple MA. MA variations for Exp, Hull,
etc. can easily be substituted, or added as parameter selectable
choices.
>
> One note on the code Brian provided: the expression H-L used in
Midpoint returns the range for only the last bar (day). As such,
IMHO it is not useful for evaluating the midpoint of each day in the
average range period. And while I didn't play with it much, I
couldn't get it to function properly in an indicator (my apologies
Brian if I missed something). As such, I find that either the MA of
Close or Average [ (H+L+C)/3 ] array are useful for an indicator such
as I think you wanted. Below is the code originally attached to the
missing post, slightly modified to use AVG rather than C for the %
indicator.
>
> Enjoy.
>
> Peace and Justice --- Patrick
>
>
> // Average Daily Range
>
> // coded by NWTrader
>
>
>
> R = H-L;
>
> periods = Param( "Periods", 5, 1, 65, 1 );
>
> Display = Param("Display Points (1) or % of MA of Typical Price
(2)", 1,1,2,1 );
>
> AR = MA(R, Periods);
>
> PAR = (AR/MA(Avg,periods) )*100 ;
>
> X = IIf(display == 1, AR, PAR);
>
> Plot( X , WriteIf(DISPLAY==1,
>
> EncodeColor(colorYellow) + "Average (" + WriteVal(PERIODS,2.0) + "
period ) Daily Range (points) " ,
>
> EncodeColor(colorBlue) + "Average (" + WriteVal(PERIODS,2.0) + "
period ) Daily Range (% of C) "
>
> ),
>
> IIf(display == 1, colorYellow , colorBlue) ,
>
> ParamStyle(" MA Style", styleDashed | styleThick)
>
> );
>
>
>
>
>
> ----- Original Message -----
> From: longarm61
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Monday, January 28, 2008 8:00 PM
> Subject: [amibroker] Re: Average Range
>
>
> Thank you very much, Brian. Percentage is exactly what I wanted
> (didn't want to ask for more than I absolutely needed, though).
> Sorry for being such a newb, but how would I plot this formula?
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "brian_z111" <brian_z111@>
wrote:
> >
> > Actually, if I was going standardise BarRange I would use the
> MidPoint
> >
> > Periods = x;
> > MidPoint = (H-L)/2;
> > BarRangePercent = (H-L)/Midpoint *100;
> > AveBarRangePercent = MA(BarRangePercent,x);
> >
> >
> > brian_z
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "brian_z111" <brian_z111@>
wrote:
> > >
> > > Hello Grant,
> > >
> > > Something along the lines of?
> > >
> > > Periods = x;
> > > AveBarRange = Sum(H-L,x)/x;
> > >
> > > You can standardise (or normalise) by converting to %:
> > >
> > > BarRangePercent = (H-L)/L * 100;
> > > Periods = x;
> > > AveBarRange = Sum(BarRangePercent,x)/x;
> > >
> > > I always normalise in situations like that.
> > >
>
********************************************************************
> > > SUM
> > > - sum data over specified number of bars Moving averages,
> summation
> > >
> > >
> > >
> > > SYNTAX sum( ARRAY, periods )
> > > RETURNS ARRAY
> > > FUNCTION Calculates a cumulative sum of the ARRAY for the
> > specified
> > > number of lookback periods (including today).
> > > EXAMPLE The formula "sum( CLOSE, 14 )" returns the sum of the
> > > preceding 14 closing prices. A 14-period simple moving
average
> > could
> > > be written "sum(C,14) / 14."
> > >
> >
>
*********************************************************************
> > >
> > > You can use the Param function for periods if you want to
change
> > the
> > > periods from with the context menu on a chart.
> > >
> > > PARAM
> > > - add user user-definable numeric parameter Exploration /
> Indicators
> > > (AFL 2.3)
> > >
> > >
> > > SYNTAX Param( ''name'', defaultval, min, max, step, sincr =
0 )
> > > RETURNS NUMBER
> > > FUNCTION Adds a new user-definable parameter, which will be
> > > accessible via Parameters dialog :
> > > right click over chart pane and select "Parameters" or press
> Ctrl+R
> > > allows to change chart parameters - changes are reflected
> > > immediatelly.
> > >
> > > "name" - defines parameter name that will be displayed in the
> > > parameters dialog
> > > defaultval - defines default value of the parameter
> > > min, max - define minimum and maximum values of the parameter
> > > step - defines minimum increase of the parameter via slider
in
> the
> > > Parameters dialog
> > > sincr - automatic section increment value (used by drag-drop
> > > interface to increase default values for parameters)
> > > WARNING: default/min/max/step parameters have to be CONSTANT
> > numbers.
> > > This is because these values are cached and are not re-read
> during
> > > subsequent formula evaluations.
> > >
> > >
> > > brian_z
> > >
> > >
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "longarm61" <norm1@> wrote:
> > > >
> > > > I would simply like an indicator that shows the average
range,
> > from
> > > > high to low, of x number of bars. Just the bars only. ATR
> takes
> > > > into account the previous close, which I don't want.
> > > >
> > > > Anyone have or can point me to a formula for this?
> > > >
> > > > Thanks in advance,
> > > >
> > > > Grant
> > > >
> > >
> >
>
>
>
>
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