Randomization problem

[David McFarlane]

D'oh!  Of course, why didn't I see that!  "Picture:drawno" is treated 
as a literal string, it does not evaluate the variable.  To do that 
you need to construct a string containing the value of the 
variable.  So please try something like the following:

TestList.setAttrib counter, "Item", c.GetAttrib("Picture:" & drawno)

-- David McFarlane, Professional Faultfinder


At 5/18/2009 03:27 PM Monday, you wrote:
>Ah, I had never thought of that.
>
>However, I just tested it with fixed defined numbers (ie: 
>c.GetAttrib("Picture:3")) and it seems to index the correct files 
>just fine. It's only when I use a variable in the colon notation 
>that it has problems (ie: c.GetAttrib("Picture:y")) and defaults to zero.
>
>Are there other ways of doing this randomization procedure? It's a 
>little bit sophisticated, which is why I'm using inline code. The 
>program needs to randomly select one picture from 8 pictures in a 
>list that are all presented in random sequence, store that filename 
>and write it to another list for later presentation.
>
>Adam
>
>On Mon, May 18, 2009 at 3:17 PM, David McFarlane 
><<mailto:mcfarla9 at msu.edu>mcfarla9 at msu.edu> wrote:
>
>Adam,
>
>Wow, I don't know offhand if that syntax works.  It looks like you
>are trying to use "colon syntax", and I don't know if you can use
>that with the Context.GetAttrib() method, that may work only with the
>List.GetAttrrib() method (e.g., colon syntax has to know which List
>has the attribute "Picture").  I would have to make some demo
>programs and look at the generated code to explore this further, but
>I will leave that to you.
>
>-- David McFarlane, Professional Faultfinder
>
>
> >I just realized when you sent this that it might be due to how the
> >random number is applied.
> >
> >I have the randomization code to select a picture for presentation,
> >so I did this:
> >TestList.setAttrib counter, "Item", c.GetAttrib("Picture:drawno")
> >
> >...in which one of the 8 files in the attribute "Picture" on another
> >list is randomly selected.
> >
> >Is it defaulting to zero because this isn't syntactically valid?
> >
> >Adam
> >
> >On Mon, May 18, 2009 at 2:59 PM, David McFarlane
> ><<mailto:mcfarla9 at msu.edu><mailto:mcfarla9 at msu.edu>mcfarla9 at msu.edu> wrote:
> >
> >Adam,
> >
> >Hmm, that bit of code works perfectly for me.  I suspect the problem
> >lies somewhere else in the script.  Just to be clear, try the
> >following and see what happens:
> >
> >Dim drawno As Integer
> >Dim i as Integer
> >For i = 1 to 8
> >     drawno = Random(0, 7)
> >     MsgBox drawno
> >Next i
> >
> >-- David McFarlane, Professional Faultfinder
> >
> >
> > >I'm having a little problem with randomization code in Ebasic. I
> > >have this code:
> > >
> > >Dim drawno As Integer
> > >drawno = Random(0, 7)
> > >
> > >...and yet, drawno is initialized to '0' every time. This code is
> > >used for 8 repetitions in the program, and each time "0" comes up.
> > >Even with "Randomize" in front, the same thing happens.
> > >
> > >Is there something I'm doing wrong?
> > >
> > >Adam
> >
> >
> >
> >
> >
> >
>
>
>
>
>

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