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Trend Indicator A*V2 (smoothed Helkin Ashi Cloud) by DZIV

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//║ Author  | DZIV (dzi_v_)

//║ Licence | CC BY-NC-SA 4.0 : https://creativecommons.org/licenses/by-nc-sa/4.0/

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//║ Changelog :

//║ 2021.04.15 > A-V1.0 -First publish

//║ 2021.05.05 > A-V2.0 -Added high and low calculation and display

//║                     -Minor script optimisation

//║ 2021.05.06 > A-V2.1 -Added resolution customisation in the study

//║ 2021.10.18 > A-V2.2 -Added "MA Type" customisation possibility

//║                     -Replaced the "colour schemes" feature by a "base color inputs" feature (user friendly)

//║                     -Switched the title names to English for a better understanding

//║                     -Minor script optimisation

//║ 2024.04.21 > A-V2.3 -Switched to PineScript version 5

//║                     -Major script rethinking and optimisation

//║                     -Removed double smoothing for less lag

//║                     -Added ALMA, HMA and ZLEMA to the "MA Type" input string

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//║ Settings :

indicator('Trend Indicator A (v2.3)', 'Trend Indicator A (v2.3)', true)

ma_type = input.string('EMA', 'MA Type', ['ALMA','HMA','SMA','SWMA','VWMA','WMA','ZLEMA','EMA'], group = 'Setup')

ma_period = input.int(9, 'MA Period (Length)', 1, group='Setup')

alma_offset = input.float(0.85, 'ALMA Shift', 0, 1, 0.05, group = 'Setup (ALMA)')

alma_sigma = input.int(6, 'ALMA Deviation', 1, step = 1, group = 'Setup (ALMA)')

show_line_1(x) =>

    input.bool(true, 'Show Close line', group = 'On/Off') ? x : na

show_line_2(x) =>

    input.bool(false, 'Show High/Low lines', group = 'On/Off') ? x : na

show_fill(x) =>

    input.bool(true, 'Show fill', group = 'On/Off') ? x : na

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//║ Calculations :

f(x) =>

    switch ma_type

        'ALMA' => ta.alma(x, ma_period, alma_offset, alma_sigma)

        'HMA' => ta.hma(x, ma_period)

        'SMA' => ta.sma(x, ma_period)

        'SWMA' => ta.swma(x)

        'VWMA' => ta.vwma(x, ma_period)

        'WMA' => ta.vwma(x, ma_period)

        'ZLEMA' => ta.ema(x + x - x[math.floor((ma_period - 1) / 2)], ma_period)

        => ta.ema(x, ma_period)

ma_heikinashi_open = f(request.security(ticker.heikinashi(syminfo.tickerid), timeframe.period, open))

ma_heikinashi_close = f(request.security(ticker.heikinashi(syminfo.tickerid), timeframe.period, close))

ma_heikinashi_high = f(request.security(ticker.heikinashi(syminfo.tickerid), timeframe.period, high))

ma_heikinashi_low = f(request.security(ticker.heikinashi(syminfo.tickerid), timeframe.period, low))

trend = 100 * (ma_heikinashi_close - ma_heikinashi_open) / (ma_heikinashi_high - ma_heikinashi_low)

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//║ Colors :

color_positive = input.color(color.new(#26A69A, 0), 'Positive color (Bullish)', group = 'Colors')

color_negative = input.color(color.new(#EF5350, 0), 'Negative color (Bearish)', group = 'Colors')

color_neutral = input.color(color.new(#808080, 0), 'Neutral color', group = 'Colors')

color_trend = trend > 0 ? color_positive : color_negative

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//║ Plot :

plot_open = plot(ma_heikinashi_open, 'Open line', na)

plot_close = plot(ma_heikinashi_close, 'Close line', show_line_1(color_trend), 2)

plot_high = plot(ma_heikinashi_high, 'High line', show_line_2(color_neutral))

plot_low = plot(ma_heikinashi_low, 'Low line', show_line_2(color_neutral))

plot_highest = plot(math.max(ma_heikinashi_open, ma_heikinashi_close),'Highest Body line', na)

plot_lowest = plot(math.min(ma_heikinashi_open, ma_heikinashi_close),'Lowest Body line', na)

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//║ Fill :

fill(plot_open, plot_close, color.new(color_trend,50), 'Open/Close Cloud')

fill(plot_high, plot_highest, show_fill(color.new(color_neutral,87.5)), title = 'High Cloud')

fill(plot_lowest, plot_low, show_fill(color.new(color_neutral,87.5)), title = 'Low Cloud')

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