Volume-Supported Linear Regression Trend

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © LonesomeTheBlue
// ------------------------------------------------------------------------------------------------
// Original author:  LonesomeTheBlue
// Original title:   Volume-Supported Linear Regression Trend
// Licence:          MPL-2.0 (the header above is the original notice, kept verbatim)
// Pine version:     4
// Fetched:          2026-10-12
// Ported to FloScript by FloSignals; modifications under MPL-2.0.
// Converter:        @flosignals/floscript 0.1.0, strict mode, score 100/100
// ------------------------------------------------------------------------------------------------
//@floscript=1
//@version=5
// Converted by the FloScript converter from a Pine-compatible v4 source.

indicator("Volume-Supported Linear Regression Trend", "VSLRT", overlay=false)
src = input(defval=close, title="Source")
len1 = input.int(defval=20, title="Short Term Length", minval=5)
len2 = input.int(defval=50, title="Long Term Length", minval=5)
ccol11 = input(defval=#00FF00ff, title="Column Colors", inline="gr1")
ccol12 = input(defval=#00BC00, title="", inline="gr1")
ccol13 = input(defval=#00FF006f, title="", inline="gr1")
ccol21 = input(defval=#FF0000ff, title="", inline="gr1")
ccol22 = input(defval=#BF0000, title="", inline="gr1")
ccol23 = input(defval=#FF00006f, title="", inline="gr1")
col11 = input(defval=#008EFF, title="Line Colors", inline="gr2")
col12 = input(defval=#006ec5, title="", inline="gr2")
col13 = input(defval=#024478, title="", inline="gr2")
col21 = input(defval=#fd9701, title="", inline="gr2")
col22 = input(defval=#CE7A00, title="", inline="gr2")
col23 = input(defval=#663d00, title="", inline="gr2")

// get short/long-term regression slope
slope_price = ta.linreg(src, len1, 0) - ta.linreg(src, len1, 1)
slope_price_lt = ta.linreg(src, len2, 0) - ta.linreg(src, len2, 1)

// get the size of top/bottom/body of the candle
tw = high - math.max(open, close)
bw = math.min(open, close) - low
body = math.abs(close - open)

//Calculate Buy/Sell Volume
_rate(cond) =>
    ret = 0.5 * (tw + bw + (cond ? 2 * body : 0)) / (tw + bw + body)
    ret := na(ret) ? 0.5 : ret
    ret

// Calculate Regression Slope for Buy/Sell Volumes
_get_trend(len) =>
    deltaup = volume * _rate(open <= close)
    deltadown = volume * _rate(open > close)

    slope_volume_up = ta.linreg(deltaup, len, 0) - ta.linreg(deltaup, len, 1)
    slope_volume_down = ta.linreg(deltadown, len, 0) - ta.linreg(deltadown, len, 1)
    [slope_volume_up, slope_volume_down]

// get buy/sell volume regression slopes for short term period
[slope_volume_up, slope_volume_down] = _get_trend(len1)

// coloring columns
column_col = slope_price > 0 ? (slope_volume_up > 0 ? (slope_volume_up > slope_volume_down ? ccol11 : ccol12) : ccol13) : slope_price < 0 ? (slope_volume_down > 0 ? (slope_volume_up < slope_volume_down ? ccol21 : ccol22) : ccol23) : color.gray

// short term trend
plot(slope_price * len1, color=column_col, style=plot.style_columns)

// get buy/sell volume regression slopes for long term period
[slope_volume_up_lt, slope_volume_down_lt] = _get_trend(len2)

// coloring columns
column_col := slope_price_lt > 0 ? (slope_volume_up_lt > 0 ? (slope_volume_up_lt > slope_volume_down_lt ? col11 : col12) : col13) : slope_price_lt < 0 ? (slope_volume_down_lt > 0 ? (slope_volume_up_lt < slope_volume_down_lt ? col21 : col22) : col23) : color.gray

// Long term trend
plot(slope_price_lt * len2, color=column_col, linewidth=3)

This file is under the Mozilla Public License 2.0; it is a port of the original by LonesomeTheBlue, with the original licence header kept and the changes made for FloScript noted in the file.

• v22026-10-14

  Library refresh 2026-10-14

• v12026-10-12

  Library refresh 2026-10-12