[amibroker] Re: send the last value of an array into the periods field

["Mike" <sfclimbers@xxxxxxxxx>]

Hi,

Based on the documentation, your code:

VarSet("docy"+1,DomCycle);

will store the entire DomCycle array. If you want to store a single 
value from that array (e.g. the value for the current bar), then you 
should use the Ref function as follows:

VarSet("docy"+1,Ref(DomCycle, 0)); // Store current bar value
http://www.amibroker.com/guide/afl/afl_view.php?name=varset

If what you want is really the *last* value (i.e. the very last value 
in the array, which may be a value far into the future), then use the 
LastValue function:

LastValue(DomCycle);
http://www.amibroker.com/guide/afl/afl_view.php?id=81

Finally, WriteVal returns a String, so you cannot use it as the 2nd 
argument of the Param function, which requires a number.
http://www.amibroker.com/guide/afl/afl_view.php?name=writeval
http://www.amibroker.com/guide/afl/afl_view.php?name=param

Mike

--- In amibroker@xxxxxxxxxxxxxxx, "reinsley" <reinsley@xxx> wrote:
>
> Hello,
> 
> I can't send the last value of an array DomCycle into the periods 
field.
> 
> 
> In a loop, the value of the array stays inside the loop.
> So, inside the loop I do a :
> 
> VarSet("docy"+1,DomCycle);
> 
> and outside the loop I do a :
> 
> docy=int(VarGet("docy"+1));
> 
> A trace give me the integer of the last value of the array DomCycle.
> It seems correct. 
> However my number is still in an array.
> 
> 
> 
> I would like to send the last value of docy into the periods field
> like this :
> Periods = Param("Periods", docy, 2, 200, 1, 10 );
> or
> AEMA=EMA(Data ,docy);
> 
> This is incorrect too :
> Periods = Param("Periods", WriteVal(docy,1.0), 2, 200, 1, 10 );
> 
> Error is argument #2 has incorrect type.
> 
> 
> 
> 
> I will appreciate help.
> 
> Regards
>



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