How do I apply a Weekly Time Frame override

Optuma Scripting
1

I have an entry signal that works on both daily and weekly time frame. I now wish to run this entry on a daily time frame, but still have my entry script use the weekly time frame criteria for entry. My aim is to be able to use a daily time frame exit signal rather than the weekly one.

Here is the signal that works

UpDiff = Close() - Close(OFFSET=1);

DownDiff = Close(OFFSET=1) - Close();

UpDay = Acc(IF(UpDiff > 0, UpDiff, 0), RANGE=Look Back Period, BARS=14);

DownDay = Acc(IF(DownDiff > 0, DownDiff, 0), RANGE=Look Back Period, BARS=14);

IndexVal=100-(100/(1+(UpDay/(DownDay+0.0001))));

NZU=IndexVal-55;

UC=IndexVal-70;

NeutUp=CLOSE()-(CLOSE()*(NZU/100));

 

Close() > NeutUp and CLOSE(OFFSET=1) <= OFFSET(NeutUp, OFFSET=1)

and CLOSE() > WVS()

 

Unfortunately my time frame over ride using the WEEK() or the CLOSE(Week(PERIODAMOUNT=1)) does not produce any signals. Does anyone know the correct way to implement a weekly time frame override?

2

I have now sorted the problem. It would not work because the ACC() function on line four did not need an override.

Lester

3

I am experiencing something similar to Lester. I want to be able to do calculations on variables assigned to imported scripts using a different timeframe to the chart. But that does not seem possible.

Case study:

Script_A has the following formula to calculate the weekly value of the Bollinger Upper Band:

BB(Week(PERIODAMOUNT=1), BARS=9, DEFAULT=UpperLine, CALC=Close, STDDEV=2.000000);

When Script_A is plotted on a daily chart it behaves as expected. (It has a sort of 'stepped' look because it is only plotting the end-of-week value, which doesn't change from Monday-Thursday).

Let’s now import Script_A into Script_B. Script_B looks like this:

BBWeeklyUpperLine = SCRIPT(SCRIPTNAME=Script_A);

BBWeeklyUpperLine

What happens on a daily chart with Script_B is that we get a huge sawtooth pattern because Script_B outputs 0 (zero) for Monday, Tuesday, Wednesday, Thursday and then the expected end-of-week value on Friday. If you take SPX for example, in the last few weeks you'll see Script_B jump from zero to over 3,000 every Friday.

This makes it impossible to do weekly comparisons of variables assigned to imported scripts on a daily chart. For example, what is the difference between this week’s weekly Upper Bollinger Band and last week’s weekly Upper Bollinger Band? When on a weekly chart the formula is simple:

BBWeeklyUpperLine = SCRIPT(SCRIPTNAME=Script_A);

BBWeeklyUpperLine[0] - BBWeeklyUpperLine[1]

But if you use that same formula on a daily chart it compares today's value to yesterday's value, not this week's end-of-week-value to last week's end-of-week-value, even though the imported script was explicitly set to a weekly timeframe.

Has anyone had a similar experience or have any suggestions on how to overcome this?

Many thanks, Dean