I decided to explore the recent ARRAY support by ProRealTine v11 and I want to share my work.
I modified the Meander Bands indicator (see v10.3 at https://www.prorealcode.com/prorealtime-indicators/meander-bands-thomas-stridsman/ ).
It used just 5 periods because arrays were not supported in v10.3, thus making adding manual periods time consuming, tiring and error prone. Now I used the same 5 periods to compare the two, to make sure they both yield the same results.
You can set more periods, if needed:
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// Meander Bands by Thomas Stridsman
//
// https://www.prorealcode.com/prorealtime-indicators/meander-bands-thomas-stridsman/
//
// March 3, 2020: modified to use ARRAYS
//
//ONCE Periods = 5
//ONCE Deviations = 2
ONCE Middle = 0
ONCE MeanderHI = 0
ONCE MeanderLO = 0
MyAvg = 0
MyVar = 0
StDev = 0
FOR i = 0 TO (Periods - 1 )
$barO[ i] = (Open [ i] - close [ i+ 1 ] ) / close [ i+ 1 ]
$barH[ i] = (High [ i] - close [ i+ 1 ] ) / close [ i+ 1 ]
$barL[ i] = (Low [ i] - close [ i+ 1 ] ) / close [ i+ 1 ]
$barC[ i] = (Close [ i] - close [ i+ 1 ] ) / close [ i+ 1 ]
//-------------- average price --------------------------------------
Avg = ($barO[ i] + $barH[ i] + $barL[ i] + $barC[ i] ) / 4
MyAvg = MyAvg + Avg
NEXT
MyAvg = MyAvg / Periods
//-------------- calculation of standard deviation ------------------
FOR i = 0 TO (Periods - 1 )
MyVar = MyVar + ((square ($barO[ i] - MyAvg) + square ($barH[ i] - MyAvg) + square ($barL[ i] - MyAvg) + square ($barC[ i] - MyAvg)) / 4 )
NEXT
//
StDev = SQRT (MyVar / Periods)
//
Middle = close * (1 + MyAvg)
MeanderHI = close * (1 + MyAvg + (Deviations * StDev))
MeanderLO = close * (1 + MyAvg - (Deviations * StDev))
RETURN Middle AS "MeanderMiddle" ,MeanderHI AS "MeanderHigh" ,MeanderLO AS "MeanderLow"
if you do not import the attached .ITF file, but prefer Copying & Pasting the code into ProBuilder v11, make sure lines 7-8 are uncommented.
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