# Reference Previous 2 Days close on 1 min chart

##### New member
Hello,

I have a scan that needs to look at 1 minute data and pull a value from the last bar ( 3:59 ) of the last 3 days. I created a simple test using just the close value ( I will have a custom calculation in the final scan).

Code:
``````def RTHclose = If(GetTime() crosses above RegularTradingEnd(GetYYYYMMDD()) - 60000, close, RTHclose[1]);
def RTHclose2 = If(RTHclose != RTHclose[1], RTHclose[1], RTHclose[2]);
def RTHclose3 = if(RTHclose2 != RTHclose2[1], RTHclose2[1], RTHclose[3]);

"RTHclose: " + RTHclose + ", RTHclose2: " + RTHclose2 + ", RTHclose3: " + RTHclose3,
Color.YELLOW
);

GetTime() crosses above (RegularTradingEnd(GetYYYYMMDD()) - 60000),
high, BarNumber() + " : " + RTHclose2[1],
Color.BLUE, no);``````

This results in the first and second values being correct (RTHclose and RTHclose2) but RTHclose3 is the same as RTHclose2. I am not sure the best way to get the last 3.

I created a more complicated version which works correctly when used on a chart but doesn't work in a scan because apparently the HighestAll functions will only look back 1 day worth of 1 minute bars in a scan. Below is the version that will retrieve the correct values on a chart but not a scan.

Code:
``````# Determine if bar is the last of the day #
def isRollover = currentDate != currentDate[1];
def currentDate = GetYYYYMMDD();

def beforeStart = GetTime() < RegularTradingStart(currentDate);
def afterEnd = GetTime() > RegularTradingEnd(currentDate);
def firstBarOfDay = if (beforeStart[1] == 1 and beforeStart == 0) or (isRollover and beforeStart == 0) then 1 else 0;
def lastBarOfDay = if
(afterEnd[-1] == 1 and afterEnd == 0) or
(isRollover[-1] and firstBarOfDay[-1])
then 1
else 0;

# Determine the highest bar number with a proper close indicating it is finished and not just a buffer bar #
def highestFinishedBar = HighestAll(if IsNaN(close) then 0 else BarNumber());
# Checks that the current bar is not the most recent daily last bar #
def notCurrent = BarNumber() !=  highestFinishedBar and BarNumber() < highestFinishedBar;
# Finds the previous daily last bar #
def last_cond_bn_daily = HighestAll( If(lastBarOfDay and notCurrent, BarNumber(), 0));
# Finds the daily last bar 2 days back #
def last_cond_bn2_daily = HighestAll( If(lastBarOfDay and notCurrent and BarNumber() != last_cond_bn_daily, BarNumber(), 0));

def currentFirstHalf = _customCalculation(condition = conditionFirstHalf, rollOver = break);
# Populate the 1 bar back and 2 bars back values #
def oneBackFirstHalf = GetValue(currentFirstHalf, (BarNumber() - last_cond_bn_daily) );
def twoBackFirstHalf = GetValue(currentFirstHalf, (BarNumber() - last_cond_bn2_daily) );``````

I would love some help figuring this out as I have been running in circles for several days.

Thanks,
Nathan

Hello,

I have a scan that needs to look at 1 minute data and pull a value from the last bar ( 3:59 ) of the last 3 days. I created a simple test using just the close value ( I will have a custom calculation in the final scan).

Code:
``````def RTHclose = If(GetTime() crosses above RegularTradingEnd(GetYYYYMMDD()) - 60000, close, RTHclose[1]);
def RTHclose2 = If(RTHclose != RTHclose[1], RTHclose[1], RTHclose[2]);
def RTHclose3 = if(RTHclose2 != RTHclose2[1], RTHclose2[1], RTHclose[3]);

"RTHclose: " + RTHclose + ", RTHclose2: " + RTHclose2 + ", RTHclose3: " + RTHclose3,
Color.YELLOW
);

GetTime() crosses above (RegularTradingEnd(GetYYYYMMDD()) - 60000),
high, BarNumber() + " : " + RTHclose2[1],
Color.BLUE, no);``````

This results in the first and second values being correct (RTHclose and RTHclose2) but RTHclose3 is the same as RTHclose2. I am not sure the best way to get the last 3.

I created a more complicated version which works correctly when used on a chart but doesn't work in a scan because apparently the HighestAll functions will only look back 1 day worth of 1 minute bars in a scan. Below is the version that will retrieve the correct values on a chart but not a scan.

Code:
``````# Determine if bar is the last of the day #
def isRollover = currentDate != currentDate[1];
def currentDate = GetYYYYMMDD();

def beforeStart = GetTime() < RegularTradingStart(currentDate);
def afterEnd = GetTime() > RegularTradingEnd(currentDate);
def firstBarOfDay = if (beforeStart[1] == 1 and beforeStart == 0) or (isRollover and beforeStart == 0) then 1 else 0;
def lastBarOfDay = if
(afterEnd[-1] == 1 and afterEnd == 0) or
(isRollover[-1] and firstBarOfDay[-1])
then 1
else 0;

# Determine the highest bar number with a proper close indicating it is finished and not just a buffer bar #
def highestFinishedBar = HighestAll(if IsNaN(close) then 0 else BarNumber());
# Checks that the current bar is not the most recent daily last bar #
def notCurrent = BarNumber() !=  highestFinishedBar and BarNumber() < highestFinishedBar;
# Finds the previous daily last bar #
def last_cond_bn_daily = HighestAll( If(lastBarOfDay and notCurrent, BarNumber(), 0));
# Finds the daily last bar 2 days back #
def last_cond_bn2_daily = HighestAll( If(lastBarOfDay and notCurrent and BarNumber() != last_cond_bn_daily, BarNumber(), 0));

def currentFirstHalf = _customCalculation(condition = conditionFirstHalf, rollOver = break);
# Populate the 1 bar back and 2 bars back values #
def oneBackFirstHalf = GetValue(currentFirstHalf, (BarNumber() - last_cond_bn_daily) );
def twoBackFirstHalf = GetValue(currentFirstHalf, (BarNumber() - last_cond_bn2_daily) );``````

I would love some help figuring this out as I have been running in circles for several days.

Thanks,
Nathan

See if this works in a scan for you without using highestall. You were very close in your original. Nice work!

Ruby:
``````def RTHclose  = If(GetTime() crosses above (RegularTradingEnd(GetYYYYMMDD()) - 60000), close, RTHclose[1]);
def RTHclose2 = If(RTHclose != RTHclose[1], RTHclose[1], RTHclose2[1]);
def RTHclose3 = If(RTHclose2 != RTHclose2[1], RTHclose2[1], RTHclose3[1]);

"RTHclose: " + RTHclose[1] + ", RTHclose2: " + RTHclose2[1] + ", RTHclose3: " + RTHclose3[1],
Color.YELLOW
);

GetTime() crosses above (RegularTradingEnd(GetYYYYMMDD()) - 60000),
high, BarNumber() + " : " + RTHclose,
Color.YELLOW, no);``````

See if this works in a scan for you without using highestall. You were very close in your original. Nice work!
Thank you, let me take that and see if I can adapt it to my scan. I will let you know if it ends up working in the context I need

See if this works in a scan for you without using highestall. You were very close in your original. Nice work!
I tried to adapt this code and it worked great as an indicator on the chart but sadly is having the same problem as a scan. It seems like anything beyond the first day is NaN. Below is a short example scan which demonstrates the problem. If you run that scan against the S&P 500 should will see that all the results come back indicating the 1 day back value is always NaN. On a chart works great in scan NaN.

Code:
``````input start = 0930;
input midpoint = 1245;
input end = 1600;

def firstHalf = SecondsFromTime(start) >= 0 and SecondsTillTime(midpoint) >= 0;

def break = GetDay() <> GetDay()[1];

def vp = volume * hlc3;
rec volSum = If(break, 0, If(firstHalf, volSum[1] + volume, volSum[1]));
rec priceWeightedSum = If(break,0,If( firstHalf, priceWeightedSum[1] + vp, priceWeightedSum[1]));
def currentFirstHalfVWAP =  priceWeightedSum / volSum;

def RTHclose  = If(GetTime() crosses above (RegularTradingEnd(GetYYYYMMDD()) - 60000), currentFirstHalfVWAP, RTHclose[1]);
def oneBackFirstHalfVWAP = If(RTHclose != RTHclose[1], RTHclose[1], oneBackFirstHalfVWAP[1]);
def twoBackFirstHalfVWAP = If(oneBackFirstHalfVWAP != oneBackFirstHalfVWAP[1], oneBackFirstHalfVWAP[1], twoBackFirstHalfVWAP[1]);

plot res = isNaN(oneBackFirstHalfVWAP);``````

From talking to support it seems like even though they claim 15 days of 1 minute lookback in reality you really can only go back about 18 hours.

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