Jump versus Playback

[DaveJackson]

I've written a script that draws particulars on the chart when played back. If i Jump through the tic file (7500 minutes at a time and I do this twice to get to the end of the file), results are where i would expect them. Particulars are based on close(-1) .

When i play back the tic file at 200 times running the script, particulars are not the same. I understand from other postings that using fast forward cause the efs to reload each candle or at the end of the Jump.

My problem is that i would like my results to be the same in normal playback ( at 200 times ) as they are when i Jump through the tic file from begining to end. Is there a way to achieve the same results, using close(-1) when playing back the file as i get when i Jump through the tic file?
Any assistance would be greatly appreciated.
Dave

[DaveJackson]

actually...I also use sma() in the calculations and i believe this is where the issue lies ...

is there a way to convert sma() so that i will receive same results when fast forwarding through a tic file or doing a normal playback ?

Thanks

[demarcog]

Originally posted by DaveJackson
actually...I also use sma() in the calculations and i believe this is where the issue lies ...

is there a way to convert sma() so that i will receive same results when fast forwarding through a tic file or doing a normal playback ?

Thanks

Hi DaveJackson,


Not sure if this will resolve the problem between speed and jump, but you may want to try using sma(-1).

In general whenever I saw a similiar problem it was because I was using index 0 on my indicators. In you case sma() is the same a sma(0).

In realtime or tick replay because any series with index 0 like sma in this case, changes with each tick the "particulars" like bar background painting or trade profit results will rarely match historical bar processing which may be the same a what you are seeing with jump.

When processing completed bars the sma value is the vale when the bar closed.

The way I've corrected this problem is to change barindex 0 to 0-1, or sma(-1) in you case.

Hope it helps,

Glen

[DaveJackson]

Hi Glen,
Thanks for getting back to me so quickly..... actually i'm using sma(4) .... would the equivalent be sma(-3) ?

Dave

[demarcog]

Originally posted by DaveJackson
Hi Glen,
Thanks for getting back to me so quickly..... actually i'm using sma(4) .... would the equivalent be sma(-3) ?

Dave

Dave,

Your welcome.

I may be helpful to post the EFS code as it's difficult to know whats going on without it.


Don't think sma(4) and sma(-3) are equivalent.

sma(4) is a 4 period simple moving average, with I think the implicit default parameters of close as the source and an index of 0 , the same a specifying sma(4, close(0))

sma(-3) doesn't look like a valid use of the sma function but again without the code it's difficult to help.

Glen