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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@xxx> 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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