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You must use the global inside the procedure otherwise the values are not
passed to the general AFL
Remember a procedure does not pass any values back to the aFL, it only does
something, like plot or explore addcolumn
A Function will pass a single variable array to the general AFL, wihch is
defined in the return statement.
--
Cheers
Graham
AB-Write >< Professional AFL Writing Service
Yes, I write AFL code to your requirements
http://www.aflwriting.com
On 06/12/06, andy_davidson_uk1 <AndyDavidson@xxxxxxxxxxxxx> wrote:
>
> Graham,
>
> Thanks for the reply. However, I've used both approaches and there
> seems to be no difference. I still get the wrong result from the
> "inWeekly" procedure call.
>
> So I tested the general approach with some much simpler code (a couple
> of MAs) and all seems to work OK. The logical conclusion therefore is
> that the error has something to do with what I'm doing in the "process
> some stuff" stage. Quite possible since, as I said before, it's quite
> lengthy code. But quite what that problem is has got me stumped...
>
> I'm going to have to re-build the code block-by-block to try and find
> out where the problem is. What fun.
>
> Question on your "Method 2" though. Is there any need for the 'global'
> definitions inside the procedure when the variables have already been
> defined as global (i.e. they were named and initialised outside and
> before the procedure)? It makes no difference to my observations with
> my code either way, but just curious if there is a best-practice
> reason at play there?
>
> Regards,
> Andy
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, Graham <kavemanperth@xxx> wrote:
> >
> > 2 ways you would need to do this as procedures do not provide any real
> > output, only an action
> >
> > METHOD 1
> >
> > X =Y = 0; //initialise global variables on first pass through code
> >
> > procedure Test(TimeFrame)
> > {
> > TimeFrameSet( Timeframe );
> > ...now process some stuff and allocate values to the global
> > variables ...
> > X = xx;
> > Y = yy;
> > TimeFrameRestore();
> > Plot(TimeFrameExpand(X,Timeframe ,expandLast), "", colorblue);
> > Plot(TimeFrameExpand(Y,Timeframe expandLast), "", colorblue);
> >
> > }
> >
> > Test(indaily);
> > Test(inweekly);
> >
> >
> >
> >
> > METHOD 2
> >
> >
> > X =Y = 0; //initialise global variables on first pass through code
> >
> > procedure Test(TimeFrame)
> > {
> > Global x;
> > global y;
> > TimeFrameSet( Timeframe );
> > ...now process some stuff and allocate values to the global
> > variables ...
> > X = xx;
> > Y = yy;
> > TimeFrameRestore();
> > }
> >
> > //now call on the procedure in daily time frame and plot
> > Test(inDaily);
> > Plot(TimeFrameExpand(X,inDaily,expandLast), "", colorblue);
> > Plot(TimeFrameExpand(Y,inDaily,expandLast), "", colorblue);
> >
> > //now call on the procedure in weekly time frame and plot
> > Test(inWeekly);
> > Plot(TimeFrameExpand(X,inWeekly,expandLast),"",, "", colorred);
> > Plot(TimeFrameExpand(Y,inWeekly,expandLast),"",, "", colorred);
> >
> >
> >
> > --
> > Cheers
> > Graham
> > AB-Write >< Professional AFL Writing Service
> > Yes, I write AFL code to your requirements
> > http://www.aflwriting.com
> >
> >
> > On 05/12/06, andy_davidson_uk1 <AndyDavidson@xxx> wrote:
> > >
> > > I'm using a procedure to output several global variables. This works
> > > fine normally (i.e. all variables are returned OK), but when when
> I try
> > > to use it in conjunction with multi-time frame analysis I run across
> > > problems.
> > >
> > > A simplified version of the code is shown below. I would copy it
> all but
> > > there's a lot of lines and I'm sure the "process some stuff" bit
> is all
> > > working fine anyhow. The problem is that (on an EOD chart) the daily
> > > plots are fine, but the expanded weekly TF plots are not. Variables X
> > > and Y are unchanged by the second procedure call...i.e. they are the
> > > same *values* as discovered in the daily time frame - only
> expanded to a
> > > weekly plot. If I switch the chart to a weekly plot I get
> > > differing values for the X and Y variables, so there is no doubt that
> > > this is plotting incorrectly.
> > >
> > > In the full code there are a lot more than just two variables returned
> > > by the procedure, so I need to get this sorted to avoid getting
> > > unecessarily messy.
> > >
> > > The basic logic looks fine to me. Grateful if someone could point out
> > > what I'm missing,
> > > TIA
> > > Andy
> > >
> > > //-----------------------------
> > > X =Y = 0; //initialise global variables on first pass through code
> > >
> > > procedure Test(TimeFrame)
> > > {
> > > TimeFrameSet( Timeframe );
> > > ...now process some stuff and allocate values to the global
> > > variables ...
> > > X = xx;
> > > Y = yy;
> > > TimeFrameRestore();
> > > }
> > >
> > > //now call on the procedure in daily time frame and plot
> > > Test(inDaily);
> > > Plot(TimeFrameExpand(X,inDaily,expandLast), "", colorblue);
> > > Plot(TimeFrameExpand(Y,inDaily,expandLast), "", colorblue);
> > >
> > > //now call on the procedure in weekly time frame and plot
> > > Test(inWeekly);
> > > Plot(TimeFrameExpand(X,inWeekly,expandLast),"",, "", colorred);
> > > Plot(TimeFrameExpand(Y,inWeekly,expandLast),"",, "", colorred);
> > >
> > > //------------------------------------
> > >
> > >
> > >
> > >
> > >
> > > Please note that this group is for discussion between users only.
> > >
> > > To get support from AmiBroker please send an e-mail directly to
> > > SUPPORT {at} amibroker.com
> > >
> > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > > http://www.amibroker.com/devlog/
> > >
> > > For other support material please check also:
> > > http://www.amibroker.com/support.html
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
>
>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
>
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