本页源码来自 TradingView 公开发布的开源脚本，版权归原作者所有， 请遵循其原始许可（Pine 脚本常见 CC BY-NC-SA / MPL-2.0 / MIT）。 本项目仅用于研究检索与许可范围内的移植。
//@version=5
indicator("Trend Channels With Liquidity Breaks [ChartPrime]", overlay=true, shorttitle="Trend Channels [ChartPrime]", max_lines_count = 50)
length = input.int(8, "Length")
show = input.bool(true, "Show Last Channel")
wait = input.bool(true, "Wait for Break")
extend = input.bool(false, "Extend Line")
enable_liquid = input.bool(false, "Volume BG")
top_color = input.color(color.rgb(51, 124, 79), "Colors", inline = "Colors")
center_color = input.color(color.gray, "", inline = "Colors")
bottom_color = input.color(color.rgb(165, 45, 45), "", inline = "Colors")
source_high = high
source_low = low
// variables to store the latest and previous pivot values
var float prev_pivot_high = na
var int prev_pivot_high_index = na
var float last_pivot_high = na
var int last_pivot_high_index = na
var float prev_pivot_low = na
var int prev_pivot_low_index = na
var float last_pivot_low = na
var int last_pivot_low_index = na
atan2(y, x) =>
var float angle = 0.0
if x > 0
angle := math.atan(y / x)
else
if x < 0 and y >= 0
angle := math.atan(y / x) + math.pi
else
if x < 0 and y < 0
angle := math.atan(y / x) - math.pi
else
if x == 0 and y > 0
angle := math.pi / 2
else
if x == 0 and y < 0
angle := -math.pi / 2
angle
min_max_volume(src) =>
out = (src - ta.lowest(src, 100))/(ta.highest(src, 100) - ta.lowest(src, 100)) * 100
math.max(math.min(100, out), 0)
volume_normalized()=>
min_max_volume(ta.wma(volume, 21))
simple_moving_average(source)=>
var float sum = na
var int count = na
count := nz(count[1]) + 1
sum := nz(sum[1]) + source
sum/count
liquidity_break()=>
vol = volume_normalized()
avg = simple_moving_average(vol)
rank = ta.percentile_nearest_rank(vol, 75, 100)
avg_rank = simple_moving_average(rank)
colour = vol < avg ? "LV" : (vol > avg and vol < avg_rank ? "MV" : "HV")
// Pivot high calculation
ph = ta.pivothigh(source_high, length, length)
if (not na(ph))
// Update the previous pivot high to the last pivot high before we update the last pivot high
prev_pivot_high := last_pivot_high
prev_pivot_high_index := last_pivot_high_index
// Update the last pivot high
last_pivot_high := ph
last_pivot_high_index := bar_index
// Pivot low calculation
pl = ta.pivotlow(source_low, length, length)
if (not na(pl))
// Update the previous pivot low to the last pivot low before we update the last pivot low
prev_pivot_low := last_pivot_low
prev_pivot_low_index := last_pivot_low_index
// Update the last pivot low
last_pivot_low := pl
last_pivot_low_index := bar_index
volume_score = volume_normalized()
var down_trend_top = line.new(na, na, na, na, color = na, width = 2)
var down_trend_bottom = line.new(na, na, na, na, color = na, width = 2)
var down_trend_top_zone = line.new(na, na, na, na, color = color.new(color.black, 100), width = 2)
var down_trend_bottom_zone = line.new(na, na, na, na, color = color.new(color.black, 100), width = 2)
var down_trend_top_zone_mid = line.new(na, na, na, na, color = color.new(color.black, 100), width = 2)
var down_trend_bottom_zone_mid = line.new(na, na, na, na, color = color.new(color.black, 100), width = 2)
var down_trend_center = line.new(na, na, na, na, color = na, width = 2, style = line.style_dashed)
var down_break_label = label.new(na, na, na, textcolor = color.new(color.silver, 0))
linefill.new(down_trend_top, down_trend_top_zone_mid, color.new(top_color, 20))
linefill.new(down_trend_bottom, down_trend_bottom_zone_mid, color.new(bottom_color, 20))
down_trend_top_zone_mid_fill = linefill.new(down_trend_top_zone_mid, down_trend_top_zone, color.new(top_color, 80))
down_trend_bottom_zone_mid_fill = linefill.new(down_trend_bottom_zone_mid, down_trend_bottom_zone, color.new(bottom_color, 80))
var up_trend_top = line.new(na, na, na, na, color = na, width = 2)
var up_trend_bottom = line.new(na, na, na, na, color = na, width = 2)
var up_trend_top_zone = line.new(na, na, na, na, color = color.new(color.black, 100), width = 2)
var up_trend_bottom_zone = line.new(na, na, na, na, color = color.new(color.black, 100), width = 2)
var up_trend_top_zone_mid = line.new(na, na, na, na, color = color.new(color.black, 100), width = 2)
var up_trend_bottom_zone_mid = line.new(na, na, na, na, color = color.new(color.black, 100), width = 2)
var up_trend_center = line.new(na, na, na, na, color = na, width = 2, style = line.style_dashed)
linefill.new(up_trend_top, up_trend_top_zone_mid, color.new(top_color, 20))
linefill.new(up_trend_bottom, up_trend_bottom_zone_mid, color.new(bottom_color, 20))
top_trend_top_zone_mid_fill = linefill.new(up_trend_top_zone_mid, up_trend_top_zone, color.new(top_color, 80))
top_trend_bottom_zone_mid_fill = linefill.new(up_trend_bottom_zone_mid, up_trend_bottom_zone, color.new(bottom_color, 80))
var up_break_label = label.new(na, na, na, textcolor = color.new(color.silver, 0), style = label.style_label_up)
if extend
line.set_extend(down_trend_top, extend.right)
line.set_extend(down_trend_bottom, extend.right)
line.set_extend(down_trend_top_zone, extend.right)
line.set_extend(down_trend_bottom_zone, extend.right)
line.set_extend(down_trend_center, extend.right)
line.set_extend(up_trend_top, extend.right)
line.set_extend(up_trend_bottom, extend.right)
line.set_extend(up_trend_top_zone, extend.right)
line.set_extend(up_trend_bottom_zone, extend.right)
line.set_extend(up_trend_center, extend.right)
line.set_extend(down_trend_top_zone_mid, extend.right)
line.set_extend(down_trend_bottom_zone_mid, extend.right)
line.set_extend(up_trend_top_zone_mid, extend.right)
line.set_extend(up_trend_bottom_zone_mid, extend.right)
else
line.set_extend(down_trend_top, extend.none)
line.set_extend(down_trend_bottom, extend.none)
line.set_extend(down_trend_top_zone, extend.none)
line.set_extend(down_trend_bottom_zone, extend.none)
line.set_extend(down_trend_center, extend.none)
line.set_extend(up_trend_top, extend.none)
line.set_extend(up_trend_bottom, extend.none)
line.set_extend(up_trend_top_zone, extend.none)
line.set_extend(up_trend_bottom_zone, extend.none)
line.set_extend(up_trend_center, extend.none)
line.set_extend(down_trend_top_zone_mid, extend.none)
line.set_extend(down_trend_bottom_zone_mid, extend.none)
line.set_extend(up_trend_top_zone_mid, extend.none)
line.set_extend(up_trend_bottom_zone_mid, extend.none)
var down_dydx = 0.
var up_dydx = 0.
atr_10 = ta.atr(10) * 6
var down_count = 0
var up_count = 0
// Plot the trendlines if we have enough pivots
if (not na(prev_pivot_high)
and not na(last_pivot_high))
and prev_pivot_high != prev_pivot_high[1]
and atan2(last_pivot_high - prev_pivot_high, last_pivot_high_index - prev_pivot_high_index) <= 0
and down_count == 0
and (wait ? up_count != 1 : true)
and barstate.isconfirmed
down_count := 1
offset = atr_10
line.set_xy1(down_trend_top, prev_pivot_high_index - length, math.round_to_mintick(prev_pivot_high + offset/7))
line.set_xy2(down_trend_top, last_pivot_high_index - length, math.round_to_mintick(last_pivot_high + offset/7))
line.set_color(down_trend_top, top_color)
line.set_xy1(down_trend_top_zone, prev_pivot_high_index - length, math.round_to_mintick(prev_pivot_high - offset/7))
line.set_xy2(down_trend_top_zone, last_pivot_high_index - length, math.round_to_mintick(last_pivot_high - offset/7))
line.set_xy1(down_trend_top_zone_mid, prev_pivot_high_index - length, prev_pivot_high)
line.set_xy2(down_trend_top_zone_mid, last_pivot_high_index - length, last_pivot_high)
down_dydx := (last_pivot_high - prev_pivot_high) / (last_pivot_high_index - prev_pivot_high_index)
line.set_xy1(down_trend_bottom, prev_pivot_high_index - length, math.round_to_mintick(prev_pivot_high - offset - offset/7))
line.set_xy2(down_trend_bottom, last_pivot_high_index - length, math.round_to_mintick(last_pivot_high - offset - offset/7))
line.set_color(down_trend_bottom, bottom_color)
line.set_xy1(down_trend_bottom_zone, prev_pivot_high_index - length, math.round_to_mintick(prev_pivot_high - offset + offset/7))
line.set_xy2(down_trend_bottom_zone, last_pivot_high_index - length, math.round_to_mintick(last_pivot_high - offset + offset/7))
line.set_xy1(down_trend_bottom_zone_mid, prev_pivot_high_index - length, math.round_to_mintick(prev_pivot_high - offset))
line.set_xy2(down_trend_bottom_zone_mid, last_pivot_high_index - length, math.round_to_mintick(last_pivot_high - offset))
// Set center line for down trend
line.set_xy1(down_trend_center, prev_pivot_high_index - length, math.round_to_mintick((prev_pivot_high + prev_pivot_high - offset) / 2))
line.set_xy2(down_trend_center, last_pivot_high_index - length, math.round_to_mintick((last_pivot_high + last_pivot_high - offset) / 2))
line.set_color(down_trend_center, center_color)
label.set_text(down_break_label, "")
label.set_color(down_break_label, color.new(color.black, 100))
// Blank previous channel
if not show
line.set_xy1(up_trend_bottom, na, na)
line.set_xy2(up_trend_bottom, na, na)
line.set_xy1(up_trend_top, na, na)
line.set_xy2(up_trend_top, na, na)
line.set_xy1(up_trend_center, na, na)
line.set_xy2(up_trend_center, na, na)
line.set_xy1(up_trend_bottom_zone, na, na)
line.set_xy2(up_trend_bottom_zone, na, na)
line.set_xy1(up_trend_bottom_zone_mid, na, na)
line.set_xy2(up_trend_bottom_zone_mid, na, na)
line.set_xy1(up_trend_top_zone, na, na)
line.set_xy2(up_trend_top_zone, na, na)
line.set_xy1(up_trend_top_zone_mid, na, na)
line.set_xy2(up_trend_top_zone_mid, na, na)
label.set_text(up_break_label, "")
label.set_color(up_break_label, color.new(color.black, 100))
if (not na(prev_pivot_low)
and not na(last_pivot_low))
and prev_pivot_low != prev_pivot_low[1]
and atan2(last_pivot_low - prev_pivot_low, last_pivot_low_index - prev_pivot_low_index) >= 0
and up_count == 0
and (wait ? down_count != 1 : true)
and barstate.isconfirmed
up_count := 1
offset = atr_10
line.set_xy1(up_trend_top, prev_pivot_low_index - length, math.round_to_mintick(prev_pivot_low + offset + offset/7))
line.set_xy2(up_trend_top, last_pivot_low_index - length, math.round_to_mintick(last_pivot_low + offset + offset/7))
line.set_color(up_trend_top, top_color)
line.set_xy1(up_trend_top_zone, prev_pivot_low_index - length, math.round_to_mintick(prev_pivot_low + offset - offset/7))
line.set_xy2(up_trend_top_zone, last_pivot_low_index - length, math.round_to_mintick(last_pivot_low + offset - offset/7))
line.set_xy1(up_trend_top_zone_mid, prev_pivot_low_index - length, math.round_to_mintick(prev_pivot_low + offset))
line.set_xy2(up_trend_top_zone_mid, last_pivot_low_index - length, math.round_to_mintick(last_pivot_low + offset))
line.set_xy1(up_trend_bottom, prev_pivot_low_index - length, math.round_to_mintick(prev_pivot_low - offset/7))
line.set_xy2(up_trend_bottom, last_pivot_low_index - length, math.round_to_mintick(last_pivot_low - offset/7))
line.set_color(up_trend_bottom, bottom_color)
line.set_xy1(up_trend_bottom_zone, prev_pivot_low_index - length, math.round_to_mintick(prev_pivot_low + offset/7))
line.set_xy2(up_trend_bottom_zone, last_pivot_low_index - length, math.round_to_mintick(last_pivot_low + offset/7))
line.set_xy1(up_trend_bottom_zone_mid, prev_pivot_low_index - length, math.round_to_mintick(prev_pivot_low))
line.set_xy2(up_trend_bottom_zone_mid, last_pivot_low_index - length, math.round_to_mintick(last_pivot_low))
up_dydx := (last_pivot_low - prev_pivot_low) / (last_pivot_low_index - prev_pivot_low_index)
// Set center line for up trend
line.set_xy1(up_trend_center, prev_pivot_low_index - length, math.round_to_mintick((prev_pivot_low + prev_pivot_low + offset) / 2))
line.set_xy2(up_trend_center, last_pivot_low_index - length, math.round_to_mintick((last_pivot_low + last_pivot_low + offset) / 2))
line.set_color(up_trend_center, center_color)
label.set_text(up_break_label, "")
label.set_color(up_break_label, color.new(color.black, 100))
// Blank previous channel
if not show
line.set_xy1(down_trend_bottom, na, na)
line.set_xy2(down_trend_bottom, na, na)
line.set_xy1(down_trend_top, na, na)
line.set_xy2(down_trend_top, na, na)
line.set_xy1(down_trend_center, na, na)
line.set_xy2(down_trend_center, na, na)
line.set_xy1(down_trend_bottom_zone, na, na)
line.set_xy2(down_trend_bottom_zone, na, na)
line.set_xy1(down_trend_bottom_zone_mid, na, na)
line.set_xy2(down_trend_bottom_zone_mid, na, na)
line.set_xy1(down_trend_top_zone, na, na)
line.set_xy2(down_trend_top_zone, na, na)
line.set_xy1(down_trend_top_zone_mid, na, na)
line.set_xy2(down_trend_top_zone_mid, na, na)
label.set_text(down_break_label, "")
label.set_color(down_break_label, color.new(color.black, 100))
liquidity_score = liquidity_break()
volume_color_high = color.new(top_color, 60 + (100 - volume_score)/5)
volume_color_low = color.new(bottom_color, 60 + (100 - volume_score)/5)
atr_20 = ta.atr(20)/1.5
if down_count == 1
if enable_liquid
linefill.set_color(down_trend_top_zone_mid_fill, volume_color_high)
linefill.set_color(down_trend_bottom_zone_mid_fill, volume_color_low)
if not extend
line.set_y2(down_trend_top, line.get_y2(down_trend_top) + down_dydx)
line.set_y2(down_trend_bottom, line.get_y2(down_trend_bottom) + down_dydx)
line.set_y2(down_trend_top_zone, line.get_y2(down_trend_top_zone) + down_dydx)
line.set_y2(down_trend_bottom_zone, line.get_y2(down_trend_bottom_zone) + down_dydx)
line.set_y2(down_trend_top_zone_mid, line.get_y2(down_trend_top_zone_mid) + down_dydx)
line.set_y2(down_trend_bottom_zone_mid, line.get_y2(down_trend_bottom_zone_mid) + down_dydx)
line.set_y2(down_trend_center, line.get_y2(down_trend_center) + down_dydx)
line.set_x2(down_trend_top, bar_index)
line.set_x2(down_trend_bottom, bar_index)
line.set_x2(down_trend_top_zone, bar_index)
line.set_x2(down_trend_bottom_zone, bar_index)
line.set_x2(down_trend_top_zone_mid, bar_index)
line.set_x2(down_trend_bottom_zone_mid, bar_index)
line.set_x2(down_trend_center, bar_index)
if low > line.get_price(down_trend_top, bar_index)
down_count := 0
label.set_text(down_break_label, liquidity_score)
label.set_color(down_break_label, top_color)
label.set_style(down_break_label, label.style_label_up)
label.set_xy(down_break_label, bar_index, line.get_y2(down_trend_top) - atr_20)
if high < line.get_price(down_trend_bottom, bar_index)
down_count := 0
label.set_text(down_break_label, liquidity_score)
label.set_color(down_break_label, bottom_color)
label.set_style(down_break_label, label.style_label_down)
label.set_xy(down_break_label, bar_index, line.get_y2(down_trend_bottom) + atr_20)
if up_count == 1
if enable_liquid
linefill.set_color(top_trend_top_zone_mid_fill, volume_color_high)
linefill.set_color(top_trend_bottom_zone_mid_fill, volume_color_low)
if not extend
line.set_y2(up_trend_top, line.get_y2(up_trend_top) + up_dydx)
line.set_y2(up_trend_bottom, line.get_y2(up_trend_bottom) + up_dydx)
line.set_y2(up_trend_top_zone, line.get_y2(up_trend_top_zone) + up_dydx)
line.set_y2(up_trend_bottom_zone, line.get_y2(up_trend_bottom_zone) + up_dydx)
line.set_y2(up_trend_top_zone_mid, line.get_y2(up_trend_top_zone_mid) + up_dydx)
line.set_y2(up_trend_bottom_zone_mid, line.get_y2(up_trend_bottom_zone_mid) + up_dydx)
line.set_y2(up_trend_center, line.get_y2(up_trend_center) + up_dydx)
line.set_x2(up_trend_top, bar_index)
line.set_x2(up_trend_bottom, bar_index)
line.set_x2(up_trend_top_zone, bar_index)
line.set_x2(up_trend_bottom_zone, bar_index)
line.set_x2(up_trend_top_zone_mid, bar_index)
line.set_x2(up_trend_bottom_zone_mid, bar_index)
line.set_x2(up_trend_center, bar_index)
if low > line.get_price(up_trend_top, bar_index) and barstate.isconfirmed
up_count := 0
label.set_text(up_break_label, liquidity_score)
label.set_color(up_break_label, top_color)
label.set_style(up_break_label, label.style_label_up)
label.set_xy(up_break_label, bar_index, line.get_y2(up_trend_top) - atr_20)
if high < line.get_price(up_trend_bottom, bar_index) and barstate.isconfirmed
up_count := 0
label.set_text(up_break_label, liquidity_score)
label.set_color(up_break_label, bottom_color)
label.set_style(up_break_label, label.style_label_down)
label.set_xy(up_break_label, bar_index, line.get_y2(up_trend_bottom) + atr_20)