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// Bollinger Bands
[upper, lower, basis] = bb ( source, 50, 2. 0 )
bb_upper = plot ( upper, title="BB Upper", color=color. blue, linewidth=2 )
bb_lower = plot ( lower, title="BB Lower", color=color. blue, linewidth=2 )
bb_basis = plot ( basis, title="Moving Average", color=color. fuchsia, linewidth=3 )
// Moving Averages
ema_slow = plot ( ema ( source, 200 ) , title="EMA Slow Length", color=color. aqua, linewidth=2 )
ema_mid = plot ( ema ( source, 89 ) , title="EMA Mid Length", color=color. orange, linewidth=1 )
ema_fast = plot ( ema ( source, 21 ) , title="EMA Fast Length", color=color. red, linewidth=1 )
// Simple Moving Average ( SMA )
sma_value = sma ( source, sma_length )
smma_value = plot ( ( sma_value sma_value[1] ) / 2, title="SMMA", color=color. black, linewidth=2 )
// Exponential Moving Average ( EMA )
emaValue = ema ( source, ema_length )
ema_plot = plot ( emaValue, title="EMA", color=color. purple, linewidth=2 )
// Weighted Moving Average ( WMA )
wmaValue = wma ( source, wma_length )
wma_plot = plot ( wmaValue, title="WMA", color=color. yellow, linewidth=2 )
// Hull Moving Average ( HMA )
hmaValue = hma ( source, hma_length )
hma_plot = plot ( hmaValue, title="HMA", color=color. teal, linewidth=2 )
// Triangular Moving Average ( TMA )
tmaSum = sum ( source, tma_length )
tma = 0. 0
for i = 0 to tma_length - 1
tma := tma nz ( source[tma_length - 1 - i] ) * ( i 1 ) / tmaSum
tma_plot = plot ( tma, title="TMA", color=color. gray, linewidth=2 )
// Zero - Lag Exponential Moving Average ( ZLEMA )
zlema ( source, length ) =>
ema1 = ema ( source, length )
ema2 = ema ( ema1, length )
zlema = 2 * ema1 - ema2
zlema
zlemaValue = zlema ( source, zlema_length )
zlema_plot = plot ( zlemaValue, title="ZLEMA", color=color. red, linewidth=2 )
// Kaufman's Adaptive Moving Average ( KAMA )
er = abs ( close - close[1] )
sc = sum ( er, kama_length )
fastest = 2 / ( 2 1 )
slowest = 2 / ( 30 1 )
effRatio = er / sc
alpha = effRatio * ( fastest - slowest ) slowest
kama = na ( kama[1] ) ? close : kama[1] alpha * ( close - kama[1] )
kama_plot = plot ( kama, title="KAMA", color=color. red, linewidth=2 )
// Trend line
trend = linreg ( source, trend_length, 0 )
trend_plot = plot ( trend, title="Trend Line", color=color. green, linewidth=2 )
// Define the inputs
source = input ( close, title="Source", type=input. source )
sma_length = input ( 50, minval=1, title="SMA Length" )
ema_length = input ( 50, minval=1, title="EMA Length" )
wma_length = input ( 50, minval=1, title="WMA Length" )
hma_length = input ( 50, minval=1, title="HMA Length" )
hma_wma_length = input ( 20, minval=1, title="HMA WMA Length" )
tma_length = input ( 50, minval=1, title="TMA Length" )
zlema_length = input ( 50, minval=````

در ثانی یکی از معانی پرکاربرد back اینه
: once again. پس ترجمه ش می شه مجددا خوش آمدید