Display getPreviousTradingDay() before Market open

[syeh]

How do I get the function "getPreviousTradingDay()" and close("inv("D")) to display Previous Trading Day date/time before the market open, 9:30am EST?

/ Example:
If today is Wednesday and time is 9:00am, getPreviousTradingDay() will display Monday.

If today is Wednesday and time is 9:31am, getPreviousTradingDay() will display Tuesday.

I would like it to display 'Tuesday" at 9:00am.

Code:
nTime = getValue("rawtime");
if (nTime != null) {
var nPreviousDay = getPreviousTradingDay(nTime);
debugPrintln("nPreviousDay:" + nPreviousDay);

xPrevClose = close(inv("D"));
var vPrevClose = xPrevClose.getValue(-1);
debugPrintln("vPrevClose:" + vPrevClose);
}

[ACM]

Re: Display getPreviousTradingDay() before Market open

syeh
A relatively simple way to accomplish this is shown in the code snippet enclosed below that also includes some comments

//your main function
    var DateObject, Rawtime, Time, BarIndex;
    //using system time if for example plotting daily bars
    DateObject = new Date();
    Time = (DateObject.getHours()*100)+DateObject.getMinutes();
    //alternatively using bar time if for example plotting pre-market intraday bars
    //Time = (hour(0)*100)+minute(0);
    if(Time < 930){//set here the time at which the switch should occur
        RawTime = rawtime(0)+86400;//this in effect modifies rawtime to the next day's equivalent
        BarIndex = 0;
    } else {
        RawTime = rawtime(0);
        BarIndex = -1;
    }
    debugPrintln(getPreviousTradingDay(RawTime)+" "+close(BarIndex, inv("d")));
//rest of your code 

Note that this is just a basic example to illustrate the logic. You can then modify it as necessary depending on how you intend to use it
Alex

Originally posted by syeh
How do I get the function "getPreviousTradingDay()" and close("inv("D")) to display Previous Trading Day date/time before the market open, 9:30am EST?

/ Example:
If today is Wednesday and time is 9:00am, getPreviousTradingDay() will display Monday.

If today is Wednesday and time is 9:31am, getPreviousTradingDay() will display Tuesday.

I would like it to display 'Tuesday" at 9:00am.

Code:
nTime = getValue("rawtime");
if (nTime != null) {
var nPreviousDay = getPreviousTradingDay(nTime);
debugPrintln("nPreviousDay:" + nPreviousDay);

xPrevClose = close(inv("D"));
var vPrevClose = xPrevClose.getValue(-1);
debugPrintln("vPrevClose:" + vPrevClose);
}