adaptation for Prorealtime v10.3 of the indicator change volume Big small of Tradingview.

•  Better Display of volume change
•  green candle : Big volume change
•  red Candle : Small volume change
  Default for BTC 2,36% m5
  Big  volume are limited up to $limup% 5%
  Pump : volume over $limgreen% 2%
  Flat : Very Small volume under $limdo% 0.2%
  Adjust based on volatitlity / TF
  BTC/USD 1h : 4,2,0.25

in this version the average of the volume (60 by default) is configurable

REM VOLUME CHANGE BIG SMALL
//by theo233
//on platform Tradingview
//adapted for the platform Prorealtime v 10.3 by bolsatrilera
//@version=3
// Better Display of Volume change
// green candle : Big volume change
// red Candle : Small volume change
// Default for BTC m5
// Big volume are limited up to $limup%         5%
// Pump : Volume over $limgreen%                2%
// Flat : Very Small Volume under $limdo%       0.2%
// Adjust based on volatility / TF
// BTC/USD 1h :  4,2,0.25
period=60
limup = 5//step=0.1,title='Limit display up')
limgreen = 2 //step=0.1,title='Green if upper : Pump')
limdo = 0.2//step=0.01,title='Red if lower : Flat')

pvol =(volume/average[period](volume))//period en cuadro de variables = entero= 60 (por defecto)

vol60 = pvol

// Top Limit
if vol60<=limup then
 vol60=vol60
else
 vol60=limup
endif

// Bottom Limit + Boost
factdo = limup   // Boost for display
if vol60<=limdo then
 vol60Small = ( 1 * factdo * ( 1-(factdo*vol60)))
else
 vol60Small = 0
endif

if vol60 <= 0 then
 r=255
 g=0
 b=0
elsif vol60 <= limgreen then
 r=128
 g=128
 b=128
else
 r=0
 g=128
 b=0
endif

// Calculate Volume Change :
// Divide volume with average on long period : long can be 50 60 100
//  VolumeChange= Volume/SMA(Volume,50)
// Then Filter Out when VC over a limit = 3, 5 , 10
// VolumeChange := VolumeChange > limit ? VolumeChange : 0

return vol60Small coloured(255,0,0)style(histogram) as "VCBS",vol60 coloured(r,g,b)style(histogram)as "VCBS",limgreen style (dottedline)as "2",limdo coloured(0,255,255)style(dottedline)as "0.2"