Can a study be made to calculate volume within a certain time bracket?

[YungTraderFromMontana]

I'm always looking for ways to make my strategy more reliable and I have been interested in volume. Usually because of times when their is often liquidity a majority of the volume is traded within the first 3 and last 3 minutes of trading, I want to see if their is a correlation between volume traded outside of these liquidity points and continuation gap ups.

To do this I'd need a study that excludes volume traded within the first 3 minutes and last 3 minutes of trading, hopefully someone can help.

 

[Dupre]

See if this helps, @YungTraderFromMontana

# Volumed - Aggregates time segmented volume blocks
# Farmin
# 7.16.2018

# Kickstart: DMonkey, UpTheCreek
# We discussed that daily volume vs summed volume aren't the same for equities

#hint:<b>Volumed</b>\nShows aggregated volume by market time segment - premarket, RTH and afterhours.  Use on a 30m chart or less.  All times are Eastern. N.B. Counts reset at midnight.
 
#Declarations
declare lower;
declare hide_on_daily;

#inputs
input Begin_precount_at = 0400;
input Stop_precount_before = 0930;
input Begin_mktcount_at = 0930;
input Stop_mktcount_before = 1600;
input Begin_aftrcount_at = 1600;
input Stop_aftrcount_before = 2000;

input show_labels = yes;
input debug = no;

#calcs
def v = if IsNaN(volume) then 0 else volume;
def na = Double.NaN;

def Count_Pre = SecondsFromTime(Begin_precount_at) >= 0
              && SecondsTillTime(Stop_precount_before) > 0;
def Count_Mkt = SecondsFromTime(Begin_mktcount_at) >= 0
              && SecondsTillTime(Stop_mktcount_before) > 0;
def Count_Aftr = SecondsFromTime(Begin_aftrcount_at) >= 0
              && SecondsTillTime(Stop_aftrcount_before) > 0;

def save_prior = GetDay() != GetDay()[1] ;

def Start_Counting_Pre = Count_Pre && !Count_Pre[1];

def Cum_Vol_Pre =
              if save_prior && !Start_Counting_Pre
              then 0
              else if Start_Counting_Pre
                   then v
                   else if Count_Pre
                        then Cum_Vol_Pre[1] + v
                        else Cum_Vol_Pre[1];

def prior_pre = if save_prior then cum_Vol_pre[1] else prior_pre[1];

def Start_Counting_Mkt = Count_Mkt && !Count_Mkt[1];

def Cum_Vol_Mkt =
              if save_prior && !Start_Counting_Mkt
              then 0
              else if Start_Counting_Mkt
                   then v
                   else if Count_Mkt
                        then Cum_Vol_Mkt[1] + v
                        else Cum_Vol_Mkt[1];

def prior_mkt = if save_prior then cum_Vol_Mkt[1] else prior_mkt[1];

def Start_Counting_Aftr = Count_Aftr && !Count_Aftr[1];

def Cum_Vol_Aftr =
              if save_prior && !Start_Counting_Aftr
              then 0
              else if Start_Counting_Aftr
                   then v
                   else if Count_Aftr
                        then Cum_Vol_Aftr[1] + v
                        else Cum_Vol_Aftr[1];

def prior_aftr = if save_prior then cum_Vol_aftr[1] else prior_aftr[1];

#Plots
plot Cumulative_PreSession_Volume = if Count_Pre
                                 then Cum_Vol_Pre
                                 else na;
Cumulative_PreSession_Volume.setDefaultColor(color.DARK_ORANGE);
Cumulative_PreSession_Volume.SetPaintingStrategy(PaintingStrategy.HISTOGRAM);

plot Cumulative_MktSession_Volume = if Count_Mkt
                                 then Cum_Vol_Mkt
                                 else na;
Cumulative_MktSession_Volume.setDefaultColor(Color.YELLOW);
Cumulative_MktSession_Volume.SetPaintingStrategy(PaintingStrategy.HISTOGRAM);

plot Cumulative_AftrSession_Volume = if Count_Aftr
                                 then Cum_Vol_Aftr
                                 else na;
Cumulative_AftrSession_Volume.setDefaultColor(Color.MAGENTA);
Cumulative_AftrSession_Volume.SetPaintingStrategy(PaintingStrategy.HISTOGRAM);


AddChartBubble(SecondsTillTime(Stop_precount_before) == 0, Cum_Vol_Pre, Cum_Vol_Pre, Color.DARK_ORANGE, 1);

AddChartBubble(SecondsTillTime(Stop_mktcount_before) == 0, Cum_Vol_Mkt, Cum_Vol_Mkt, Color.YELLOW, 0);

AddChartBubble(GetDay() != GetDay()[-1], Cum_Vol_Aftr, Cum_Vol_Aftr, Color.MAGENTA, 1);

addlabel(show_labels, "PreVol: " + cum_Vol_Pre + " MktVol: " + cum_Vol_Mkt + " AfterVol: " + cum_Vol_Aftr + " = " + (cum_Vol_Pre + cum_Vol_Mkt + cum_Vol_Aftr) + " | Reported by Daily agg: " + volume(period = AggregationPeriod.Day), Color.LIGHT_GRAY );

addlabel(show_labels, "PreVol: " + prior_Pre + " MktVol: " + prior_Mkt + " AfterVol: " + prior_Aftr + " = " + (prior_Pre + prior_Mkt + prior_Aftr) + " | Reported by Daily agg: " + volume(period = AggregationPeriod.Day)[1], Color.GRAY );

###   End Code   ###