|
PureBytes Links
Trading Reference Links
|
At 4:21 PM -0400 8/10/99, JAHunter wrote:
>I am new to EL. Need to remember values calculated on back bars so as not
>to slow down the program. I looked into the EL manual and Sam Tennis's book
>but somehow could not find answers. Maybe they're elementary.
>
>Would somebody be able to clarify the following issues (I am using TS4):
>
>(1) What is the scope of EL variables and arrays? On the present bar only or
>are they remembered from one bar to the next?
>
>Example:
>
>Bar=1 All variables, arrays are initialized and some get new values.
Variable are initialized to the value specified in the "Vars"
statement prior to CurrentBar = 1 and only then.
>
>Bar=2 Do variables, arrays start out with the values calculated one bar
>ago,
Yes.
>
>Or are they initialized again with their default values?
No
>
>Said yet another way, if I want to increment Var1 by 20 every bar, can I
>write
>
> Var1 = Var1+20 ?
Yes. That is commonly done.
>
>(2) If the scope of variables/arrays is the present bar only, I assume a
>global variables DLL is the only solution to my problem. What is the best
>DLL available for passing arrays from one bar to the next bar, and also from
>one window&indicator to another window&indicator? For the moment, unless
>the 64K limitation is an issue (see question below), I would rather keep the
>logic in EL and use the DLL just to pass values.
Arrays work the same as all variables and retain their values from
the previous bar.
>
>(3) 64K limitation. Does the size of a system include all invoked
>functions? If not, I would think that one could parcel out all calculation,
>entry and exit logic to functions and have the system only keep track of
>actual entries and market position. I am not talking about included
>systems, just perhaps more elaborate calculation, entry and exit logic than
>64K can accomodate.
Functions are included in the 64K limit but "Include Systems" are not (I think)
>
>I appreciate your help.
>
Try looking at the code for built in functions to see how variable are used.
Bob Fulks
|