Created
December 10, 2019 04:15
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| //@version=3 | |
| study("bollinger_band_3", "BB3", true) | |
| // 入力値 ------------------------------------ | |
| // BB | |
| bb_lenght = input(20, title="BB 期間", type=integer) | |
| bb_src = input(close, title="BB ソース") | |
| bb_mult1 = input(1, title="BB1 標準偏差", type=float) | |
| bb_mult2 = input(2, title="BB2 標準偏差", type=float) | |
| bb_mult3 = input(3, title="BB3 標準偏差", type=float) | |
| // 表示切り替え | |
| BB1_DISP = input(true, title="BB1 表示/非表示") | |
| BB2_DISP = input(true, title="BB2 表示/非表示") | |
| BB3_DISP = input(true, title="BB3 表示/非表示") | |
| // 計算 ------------------------------------ | |
| // BBの上辺の値を取得する | |
| bb_upper(_mult, _bb_basis, _bb_src, _bb_lenght) => | |
| _bb_dev = _mult * stdev(_bb_src, _bb_lenght) | |
| _bb_basis + _bb_dev | |
| // BBの下辺の値を取得する | |
| bb_lower(_mult, _bb_basis, _bb_src, _bb_lenght) => | |
| _bb_dev = _mult * stdev(_bb_src, _bb_lenght) | |
| _bb_basis - _bb_dev | |
| // 各BBを計算 | |
| bb_basis = sma(bb_src, bb_lenght) | |
| bb_upper1 = bb_upper(bb_mult1, bb_basis, bb_src, bb_lenght) | |
| bb_lower1 = bb_lower(bb_mult1, bb_basis, bb_src, bb_lenght) | |
| bb_upper2 = bb_upper(bb_mult2, bb_basis, bb_src, bb_lenght) | |
| bb_lower2 = bb_lower(bb_mult2, bb_basis, bb_src, bb_lenght) | |
| bb_upper3 = bb_upper(bb_mult3, bb_basis, bb_src, bb_lenght) | |
| bb_lower3 = bb_lower(bb_mult3, bb_basis, bb_src, bb_lenght) | |
| // 表示 ------------------------------------ | |
| // 色 | |
| sma_color = color(red, 50) // SMA | |
| bb_color1 = color(green, 55) // BB1 | |
| bb_color2 = color(yellow, 55) // BB2 | |
| bb_color3 = color(blue, 55) // BB3 | |
| // SMA | |
| plot(bb_basis, color=sma_color, title="BB SMA") | |
| // BB1 | |
| p1_u = plot(BB1_DISP ? bb_upper1 : na, color=bb_color1, title="BB1 上辺") | |
| p1_l = plot(BB1_DISP ? bb_lower1 : na, color=bb_color1, title="BB1 下辺") | |
| fill(p1_u, p1_l, color=aqua, transp=98, title="BB1 背景") | |
| // BB2 | |
| p2_u = plot(BB2_DISP ? bb_upper2 : na, color=bb_color2, title="BB2 上辺") | |
| p2_l = plot(BB2_DISP ? bb_lower2 : na, color=bb_color2, title="BB2 下辺") | |
| fill(p2_u, p2_l, color=aqua, transp=98, title="BB2 背景") | |
| // BB3 | |
| p3_u = plot(BB3_DISP ? bb_upper3 : na, color=bb_color3, title="BB3 上辺") | |
| p3_l = plot(BB3_DISP ? bb_lower3 : na, color=bb_color3, title="BB3 下辺") | |
| fill(p3_u, p3_l, color=aqua, transp=98, title="BB3 背景") |
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