Subtract a number of days from YYYYMMDD?

[windowshopr]

What I'm looking for is a way to restrict my number of trades placed per day to a limit of 3, no more. I have most of the logic for this done already, but the last thing I'm missing is a way to determine what "day number" the current day is.

Example, let's say we're on the 1 minute (or any intraday) chart, and we scroll all the way to the left, roughly 30 days ago. That would be considered "day 1" on the chart, and if my "total trades placed" was 3, and we divided that by the day number of 1, we would get 3, so no more trades are allowed for that day. When the new day starts after midnight, that should be considered "day 2", and when we place another 3 trades totalling the count to 6 total trades, divided by "day 2" = 3, no more trades for that day, etc etc.

What I thought you could do is something like this assuming you're on the 1 minute chart with 30 days of history showing:

def currentDayNumber = DaysFromDate(GETYYYYMMDD() - 30) + 1;

...where today's date - 30 would make 0, +1 to get an appropriate divisor.

Any ideas?

I should reiterate, this is to be used for a strategy, not an indicator. Also that formula doesn't really make sense as it'll end up with negative numbers, but I have no clue how to subtract ints from datetimes in thinkscript...

 

[halcyonguy]

What I'm looking for is a way to restrict my number of trades placed per day to a limit of 3, no more. I have most of the logic for this done already, but the last thing I'm missing is a way to determine what "day number" the current day is.

Example, let's say we're on the 1 minute (or any intraday) chart, and we scroll all the way to the left, roughly 30 days ago. That would be considered "day 1" on the chart, and if my "total trades placed" was 3, and we divided that by the day number of 1, we would get 3, so no more trades are allowed for that day. When the new day starts after midnight, that should be considered "day 2", and when we place another 3 trades totalling the count to 6 total trades, divided by "day 2" = 3, no more trades for that day, etc etc.

What I thought you could do is something like this assuming you're on the 1 minute chart with 30 days of history showing:

def currentDayNumber = DaysFromDate(GETYYYYMMDD() - 30) + 1;

...where today's date - 30 would make 0, +1 to get an appropriate divisor.

Any ideas?

I should reiterate, this is to be used for a strategy, not an indicator. Also that formula doesn't really make sense as it'll end up with negative numbers, but I have no clue how to subtract ints from datetimes in thinkscript...

in your method of using total trades and total days, what happens if a day has 1 trade? a day after that could be allowed to have 5.

after you go past a weekend, the counts will be off.


if you want to limit a counter to 3 , each day, why don't you,...
count to 3 each day?

add this to the end of your study.
change trigger , so it is equal to the variable you use to trigger a buy order.

if you don't change my trigger = code line, it will cause an error.


will have to change the addorder that close the trades, so they don't try to close a non existent 4th trade and cause a short trade.

def bn = barnumber();

# normal trading hours
def rth =  GetTime() >= RegularTradingStart(GetYYYYMMDD()) and GetTime() < RegularTradingEnd(GetYYYYMMDD());

def trigger = ... your true/false buy signal used in buy addorder() function ...

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

input trade_only_during_normal_hours = yes ;
def tradeok = if !trade_only_during_normal_hours then 1 else rth;


input day_limit = 3;

def cnt =
if bn = 1 then 0
else if diffday and trigger and tradeok then 1
else if diffday then 0
else if cnt[1] == day_limit then cnt[1]
else if trigger and tradeok then cnt[1] + 1
else cnt[1];

def enable = (cnt < day_limit and tradeok);

# use buyx in a new addorder()
def buyx = (enable and trigger);
# addorder(    , buyx,    );

# new sell variable for addorder
# def sellx = (enable  and sell  variable);
# addorder(    , sellx,    );

addlabel(1,
cnt + " trades today",
(if enable then color.green else color.red));

addchartbubble(buyx, high, "buy", color.green, yes);
#

(just typing on my cell, so forgive typos)

 

[windowshopr]

Thank you @halcyonguy this will work! Great solution, thank you!

 

[hooptownla]

How do I add a message to add the hour and minutes on a specific bar to buy or sell when a condition is triggered?