Re: [amibroker] Application of Dynamic Array Variables, AmiBroker Email List Archive

On Sep 13, 2008, at 3:50 PM, Ken Close wrote:

I previously asked (and received good help) on how to assign a dynamic name to array variables. Such as Price01, Price02, Fund01, Fund02, etc, where the "01" and "02" are provided by VarSet commands. I have proven the more simple of these to work.

However, when I attempt to execute a practical application, I get a variety of errors which I cannot solve.

I would like to plot a line of numbers using gfx commands, in order to create a title with evenly formatted columns.

I can do this with many repeats of lines, manually changing the 01,02,03 parts of the variable names.

Such as

GfxSelectPen( colorBlue );
for( i = 1; i < 5 && i < BarCount; i++ )
{
   PrintInCell( StrFormat(Fund01), 1, 0 );
   PrintInCell( StrFormat(BuyDateDisp01),1, 1 );
   PrintInCell( StrFormat("$" + NumDec(BuyPrice01,1.2) ),1, 2 );
   PrintInCell( StrFormat("$" + NumDec(Val01,1.0) ),1, 3 );
   PrintInCell( StrFormat("$" + NumDec(Val01Today,1.0) ),1, 4 );
   PrintInCell( StrFormat("$" + NumDec(ValChg01,1.0) ), 1, 5 );
   PrintInCell( StrFormat(Fund01),2, 0 );
   PrintInCell( StrFormat(BuyDateDisp01),2, 1 );
   PrintInCell( StrFormat("$" + NumDec(BuyPrice01,1.2) ),2, 2 );
   PrintInCell( StrFormat("$" + NumDec(Val01,1.0) ),2, 3 );
   PrintInCell( StrFormat("$" + NumDec(Val01Today,1.0) ),2, 4 );
   PrintInCell( StrFormat("$" + NumDec(ValChg01,1.0) ), 2, 5 );
}

(NumDec) is a function to control the decimal formatting--not germane to my current barrier.)

If I try to put in something like this:

procedure PrintOneLine(j)
{
   PrintInCell( StrFormat(Fund(j)),j, 0 );
   PrintInCell( StrFormat(BuyDateDisp(j)),j, 1 );
   PrintInCell( StrFormat("$" + NumDec(BuyPricex(j),1.2) ),j, 2 );
   PrintInCell( StrFormat("$" + NumDec(Val(j),1.0) ),j, 3 );
   PrintInCell( StrFormat("$" + NumDec(ValToday(j),1.0) ),j, 4 );
   PrintInCell( StrFormat("$" + NumDec(ValChg(j),1.0) ),    j, 5 );
}

Then I get errors from the functions I have previously set up to try and assign the dynamic part of the variable, such as

function Price( k )
{
return VarGet( "Price"+ StrFormat("%02.0f", k ) );
}

function Fund( k )
{
return VarGet( "Fund"+ StrFormat("%02.0f", k ) );
}

So, while the advice to use VarSet or VarGet functions was good advice, I am unable to implement it, even after trying variations of statements.

Does anyone have an example of using dynamic variables to print Title statements, either traditional AFL or using the new GFX which you could share so I could get on with the coding.

Lacking any help on this, I guess my only other alternative is repetitive lines for each set of variables, controlled with IF statements. Messy.

Thanks for any help.

Ken