Hola de nuevo.
Antes de nada, os deseo unas felices fiestas!!!!
Os agradecería pudierais echarme una mano con la conversión del indicador “Percentile Rank Oscillator (Price + VWMA)”
Lo podéis ver en el siguiente enlace:
La descripción que viene es:
“A statistical oscillator designed to identify potential market turning points using percentile-based price analytics and volume-weighted confirmation.
What is PRO?
Percentile Rank Oscillator measures how extreme current price behavior is relative to its own recent history. It calculates a rolling percentile rank of price midpoints and VWMA deviation (volume-weighted price drift). When price reaches historically rare levels – high or low percentiles – it may signal exhaustion and potential reversal conditions.
How it works
- Takes midpoint of each candle ((H+L)/2)
- Ranks the current value vs previous N bars using rolling percentile rank
- Maps percentile to a normalized oscillator scale (-1..+1 or 0–100)
- Optionally evaluates VWMA deviation percentile for volume-confirmed signals
- Highlights extreme conditions and confluence zones
Why percentile rank?
Median-based percentiles ignore outliers and read the market statistically – not by fixed thresholds. Instead of guessing “overbought/oversold” values, the indicator adapts to current volatility and structure.
Key features
- Rolling percentile rank of price action
- Optional VWMA-based percentile confirmation
- Adaptive, noise-robust structure
- User-selectable thresholds (default 95/5)
- Confluence highlighting for price + VWMA extremes
- Optional smoothing (RMA)
- Visual extreme zone fills for rapid signal recognition
How to use
- High percentile values –> statistically extreme upward deviation (potential top)
- Low percentile values –> statistically extreme downward deviation (potential bottom)
- Price + VWMA confluence strengthens reversal context
- Best used as part of a broader trading framework (market structure, order flow, etc.)
Tip: Look for percentile spikes at key HTF levels, after extended moves, or where liquidity sweeps occur. Strong moves into rare percentile territory may precede mean reversion.
Suggested settings
- Default length: 100 bars
- Thresholds: 95 / 5
- Smoothing: 1–3 (optional)”.
El codigo del indicador en Pinescript es el siguiente:
//@version=6
indicator("Percentile Rank Oscillator (Price + VWMA)", shorttitle="PRO", overlay=false, max_lines_count=80)
// ----------------- INPUTS -----------------
grp_core = "Core"
len_in = input.int(100, "Lookback (bars for percentile)", minval=3, maxval=500, group=grp_core)
out_mode = input.string("-1..+1", "Output scale", options=["-1..+1","0..100"], group=grp_core)
// VWMA options
grp_vw = "VWMA Percentile"
enable_vwma_pct = input.bool(true, "Enable VWMA-based percentile", group=grp_vw)
vwma_len_same = input.bool(true, "Use VWMA length = main lookback", group=grp_vw)
vwma_len_custom = input.int(100, "VWMA length (if custom)", minval=1, group=grp_vw)
// Display & thresholds
grp_display = "Display"
smooth = input.int(1, "Smoothing (RMA) length (1 = none)", minval=1, group=grp_display)
high_thresh = input.float(95.0, "Upper percentile threshold (%)", minval=50.0, maxval=100.0, step=0.1, group=grp_display)
low_thresh = input.float(5.0, "Lower percentile threshold (%)", minval=0.0, maxval=50.0, step=0.1, group=grp_display)
fill_extremes = input.bool(true, "Fill background when extremes hit", group=grp_display)
// Alerts & colors
grp_alerts = "Alerts & Colors"
alerts_price = input.bool(true, "Enable price percentile alerts", group=grp_alerts)
alerts_vwma = input.bool(true, "Enable VWMA percentile alerts", group=grp_alerts)
alerts_confl = input.bool(true, "Enable confluence alerts (price + VWMA)", group=grp_alerts) // default ON
// Colors: single top/bottom colors to keep UI minimal
grp_colors = "Colors (bg fills)"
top_color = input.color(color.new(#A53860, 80), "Top (overbought) BG color", group=grp_colors)
bot_color = input.color(color.new(#4D8B31, 80), "Bottom (oversold) BG color", group=grp_colors)
band_fill_color = input.color(color.new(#423E3B, 95), "Working band fill (between thresholds)", group=grp_colors)
// ----------------- HELPERS & SAFETY -----------------
tiny = 1e-9
len = math.max(3, math.min(len_in, 500))
// price midpoint
mid = (high + low) / 2.0
// ----------------- rolling percentile with linear interpolation -----------------
// returns percentile rank in 0..100 for current value against last n values (including current)
rolling_percentile_interp(src, n) =>
avail = math.min(n, bar_index + 1)
arr = array.new_float(0)
for i = 0 to avail - 1
array.push(arr, nz(src[i]))
array.sort(arr) // ascending
current = nz(src)
less = 0
equal = 0
for j = 0 to array.size(arr) - 1
v = array.get(arr, j)
less := less + (v < current ? 1 : 0)
equal := equal + (v == current ? 1 : 0)
pct = 0.0
if equal > 0
pct := (less + 0.5 * equal) / math.max(avail, 1) * 100.0
else
if less == 0
pct := 0.0
else if less >= avail
pct := 100.0
else
v_low = array.get(arr, less - 1)
v_high = array.get(arr, less)
denom = v_high - v_low
frac = denom == 0.0 ? 0.5 : math.max(0.0, math.min(1.0, (current - v_low) / denom))
pct := (less + frac) / math.max(avail, 1) * 100.0
pct
// ----------------- PRICE percentile -----------------
price_pct = rolling_percentile_interp(mid, len)
price_pct_smooth = smooth > 1 ? ta.rma(price_pct, smooth) : price_pct
map_to_out(x_pct) => out_mode == "-1..+1" ? (x_pct / 50.0 - 1.0) : x_pct
price_out = map_to_out(price_pct_smooth)
// ----------------- VWMA percentile (optional) -----------------
// initialize numeric variables to avoid NA-type reassignments
vwma_pct = 0.0
vwma_pct_smooth = 0.0
vw_out = 0.0
if enable_vwma_pct
vwlen = vwma_len_same ? len : math.max(1, vwma_len_custom)
vwma_mid = ta.vwma(mid, vwlen)
disp = mid - vwma_mid
vwma_pct := rolling_percentile_interp(disp, len) // percentile of deviation
vwma_pct_smooth := smooth > 1 ? ta.rma(vwma_pct, smooth) : vwma_pct
vw_out := map_to_out(vwma_pct_smooth)
else
// keep numeric defaults (vw_out stays numeric); plotting will use enable_vwma_pct ? vw_out : na
vwma_pct := 0.0
vwma_pct_smooth := 0.0
vw_out := 0.0
// ----------------- thresholds & conditions -----------------
is_price_top = price_pct >= high_thresh
is_price_bot = price_pct <= low_thresh
is_vw_top = enable_vwma_pct ? (vwma_pct >= high_thresh) : false
is_vw_bot = enable_vwma_pct ? (vwma_pct <= low_thresh) : false
confl_top = enable_vwma_pct and is_price_top and is_vw_top
confl_bot = enable_vwma_pct and is_price_bot and is_vw_bot
// ----------------- background color priority (global) -----------------
// priority: confluence (price+vw) > price > vwma
bg_price = (is_price_top or is_price_bot) and fill_extremes and alerts_price ? (is_price_top ? top_color : bot_color) : na
bg_vw = (is_vw_top or is_vw_bot) and fill_extremes and alerts_vwma ? (is_vw_top ? top_color : bot_color) : na
bg_confl = (confl_top or confl_bot) and fill_extremes and alerts_confl ? (confl_top ? top_color : bot_color) : na
final_bg = not na(bg_confl) ? bg_confl : not na(bg_price) ? bg_price : not na(bg_vw) ? bg_vw : na
bgcolor(final_bg)
// ----------------- plots (global scope) -----------------
p_price = plot(price_out, title="Price Percentile", color=color.new(#5448C8, 0), linewidth=1)
// plot vw_out only when enabled (use ternary in plot call to show na when disabled)
p_vwma = plot(enable_vwma_pct ? vw_out : na, title="VWMA Percentile", color=color.new(#548687, 0), linewidth=1)
// working band lines (in output scale)
// compute raw then round to 6 decimal places to avoid showing awkward floats like 0.899999999....
top_line_raw = out_mode == "-1..+1" ? (high_thresh / 50.0 - 1.0) : high_thresh
bot_line_raw = out_mode == "-1..+1" ? (low_thresh / 50.0 - 1.0) : low_thresh
// round
top_line = math.round(top_line_raw * 1e6) / 1e6
bot_line = math.round(bot_line_raw * 1e6) / 1e6
h_top = hline(top_line, "Top", color=#A53860)
h_bot = hline(bot_line, "Bot", color=#4D8B31)
h_mid = hline(out_mode == "-1..+1" ? 0.0 : 50.0, "Mid", color=#423E3B)
fill(h_top, h_bot, band_fill_color)
// ----------------- alerts (global scope) -----------------
alertcondition(alerts_price and is_price_top, title="Price Percentile TOP", message="Price percentile reached TOP threshold")
alertcondition(alerts_price and is_price_bot, title="Price Percentile BOTTOM", message="Price percentile reached BOTTOM threshold")
alertcondition(enable_vwma_pct and alerts_vwma and is_vw_top, title="VWMA Percentile TOP", message="VWMA percentile reached TOP threshold")
alertcondition(enable_vwma_pct and alerts_vwma and is_vw_bot, title="VWMA Percentile BOTTOM", message="VWMA percentile reached BOTTOM threshold")
alertcondition(enable_vwma_pct and alerts_confl and confl_top, title="Confluence TOP", message="Price & VWMA percentiles both at TOP extreme")
alertcondition(enable_vwma_pct and alerts_confl and confl_bot, title="Confluence BOTTOM", message="Price & VWMA percentiles both at BOTTOM extreme")
// ----------------- final note -----------------
// Price percentile measures how rare the current midpoint is relative to last 'len' bars.
// VWMA percentile measures how rare the current VWMA deviation (mid - VWMA(mid)) is relative to last 'len' bars.
// Both percentiles use linear interpolation for smooth percent rank values.
Muchas gracias y disculpad las molestias!!!
