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<SPAN
class=062100820-03022004>Thanks for checking it out Bruce, I appreciate it. The
msg I posted was a simplification of the more complicated code where I first
found the problem, and that was the last work I've had time to do on it. (That
j.o.b. thing...)
<SPAN
class=062100820-03022004>
<SPAN
class=062100820-03022004>Do I gather that you saw the same results I did?
Puzzling, isn't it?
<SPAN
class=062100820-03022004>
<SPAN
class=062100820-03022004>Dave
<BLOCKQUOTE
>I
was up early this morning and took at quick look at the problem that you
found. Have you made any headway?-- Bruce--- In
amibroker@xxxxxxxxxxxxxxx, "Dave Merrill" <dmerrill@xxxx>
wrote:> I'm seeing a weird problem that I think may be the result
of something I> don't understand about variable scoping. Check this
out:> > ----------------------> function
StochTransform(array, period) {> local
LowValue;> LowValue = LLV(array,
period);> return 100 * (array -
LowValue) / (HHV(array, period) - LowValue);> }> >
Diff = Signal(12, 26, 9);> StochDiff = StochTransform(Diff, 5);>
> //JunkIgnored = StochTransform(C, 14);
// <<< ENABLING THIS CHANGES Diff,> WHY???>
//JunkIgnored = StochTransform(Diff, 14); //
<<< BUT THIS DOESN'T> ---------------------->
> First enter it into IB as given above, look at the chart, then
enable the> first of the two commented out lines at the bottom.
Notice that Diff (blue> histogram) changes drastically. Now enable
the second one and not the first,> and things go back to
"normal".> > I don't get this at all. It seems like it must be
due to interaction between> the two calls to StochTransform, and in
fact, if you create a copy of the> function called StochTransform2,
and call that the second time, no problem.> Guessing further from
the fact that using the same value for the 'array'> parameter in
both cases also prevents the problem, most likely the conflict> is
with the reuse of that formal parameter when the function is called
the> second time.> > I've never seen this behavior
before, and I don't understand it. Among other> things, if it's
really true that you can't call the same function more than> once
without interactions like this, a lot of code I've written that I>
thought worked, didn't. Or is there some simple stupid bug in this test
that> I'm missing?> > Ideas? Tomasz?> >
Dave
Send BUG REPORTS to bugs@xxxxxxxxxxxxx
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