High / Low of a Given Period

[ValueTrader 10]

I'm having difficulty attempting to code a simple show-me study.

 

I'm Looking for the high / low of a period to be ploted.

 

if the period is eg 30 min, i need it to start at the top of the hour and end half past, then start again for the next 30mins.

 

I tried this...on 2 min bars...

if time > 1429 then begin
plot1(highest(high,15))
plot2(lowest(low,15))

end

 

but this gives me a running high and low with no freference to period boundrys, and will give me a high / low from 1445 to 1515. Whereas i need the study to show me the high and low of each 30min period.

 

Does anyone also know a function that deletes the old high / low and plots the new one?

as if new highs are being made during a run up i've ended up with a run of dots / lines.

 

Thanks

 

Valuetrader

[Tams 20]

I'm having difficulty attempting to code a simple show-me study.

 

I'm Looking for the high / low of a period to be ploted.

 

if the period is eg 30 min, i need it to start at the top of the hour and end half past, then start again for the next 30mins.

 

I tried this...on 2 min bars...

if time > 1429 then begin
plot1(highest(high,15))
plot2(lowest(low,15))

end

 

but this gives me a running high and low with no freference to period boundrys, and will give me a high / low from 1445 to 1515. Whereas i need the study to show me the high and low of each 30min period.

 

Does anyone also know a function that deletes the old high / low and plots the new one?

as if new highs are being made during a run up i've ended up with a run of dots / lines.

 

Thanks

 

Valuetrader

 

can you post a mock up diagram? with notes on the specifics you are looking for?

Edited June 12, 2011 by Tams

[BlowFish 10]

You need something like :-

 

	Input:
iStartTime (0800),
ResetMinutes (60);

var: ll(0),hh,(0);

if mod( (TimeToMinutes(time)-TimeToMinutes(iStartTime)), TimeToMinutes(ResetMinutes) ) = 0 then	
begin // reset highest high lowest low
	hh = high;
	ll = low;
end;
if high > hh then hh = high;
if low < ll then ll = low;

plot hh & ll here

 

typed straight into the forum so may have errors but the principle is sound. Be aware that hh & ll are unstable right at the start of the chart until a 60 min boundary or 8.00 comes round, easily fixed by checking for the first bar and running the 'reset' portion of code. (or just load a few days data and you wont even notice).

[ValueTrader 10]

This looks like just the job, thanks BF. Tams, was about to post my diagrams when BF posted the solution, but thanks for the offer of help. Also, where can I find more litriture on EL? I currently have 'getting started' and a reference of reserved words. I did a search of these pdfs, but found nothing relating to time as shown in BF's code. Thanks

Edited June 13, 2011 by ValueTrader
Added question

[Tams 20]

This looks like just the job, thanks BF. Tams, was about to post my diagrams when BF posted the solution, but thanks for the offer of help. Also, where can I find more litriture on EL? I currently have 'getting started' and a reference of reserved words. I did a search of these pdfs, but found nothing relating to time as shown in BF's code. Thanks

 

Lots of useful info here:

Documentation

[BlowFish 10]

Figuring out other peoples code is a great way too, chances are someone has done it (or done similar) before when it comes to EL. Tackling little projects (as you have) is probably as good a way as any too.

 

Oh I should mention that there was probably an ulterior motive in Tams original advice The act of setting out exactly want you want to do will often give clues for a solution to you. If it is more complicated break things down into smaller manageable chunks. Maybe I should not have dived in quite so quickly!