[Date Index]
[Thread Index]
[Author Index]
Re: Table iterator bounds problem
*To*: mathgroup at christensen.cybernetics.net
*Subject*: [mg1721] Re: Table iterator bounds problem
*From*: Richard Mercer <richard at seuss.math.wright.edu>
*Date*: Fri, 21 Jul 1995 01:45:23 -0400
> Hello,
>
> I get the following strange error with MMA 2.2 on Mac
> and RS6000:
>
> In[4]:= Table[Sin[x],{x, -Pi/2, Pi/2, Pi/10}]
>
> Pi Pi Pi
> Table::iterb: Iterator {x, -(--), --, --} does not have appropriate bounds.
> 2 2 10
>
> It's the increment that isn't liked, because without it
> everything's fine:
>
> In[4]:= Table[Sin[x],{x, -Pi/2, Pi/2}]
>
> Out[4]= {-1, -Cos[1], -Cos[2], -Cos[3]}
>
>
> It happens after I load a package I wrote which doesn't
> even use Iterators. Can anybody think of what might be
> going wrong? I don't particularly want to post the
> contents of the long, badly-written package, I'll mail
> it if anybody's interested.
>
> A few ideas about what might be causing the Iterator to
> be redefined would be appreciated.
It's almost certainly the package that is causing your problem;
I don't see it using version 2.2.
This sort of thing is not unheard of; packages sometimes have side-effects.
Especially "poorly-written" ones, though I have seen side-effects from Standard
Packages also.
While the side effect can be traced, it's a nasty job that I'm not interested
in any more than you. However a simple work-around might do the trick. Try
Table[Sin[x],{x, -Pi/2, Pi/2, N[Pi/10]}]
and if that doesn't work, try
Table[Sin[x],N[{x, -Pi/2, Pi/2, Pi/10}]]
Richard Mercer
Prev by Date:
**A strong MAA, please**
Next by Date:
**How to Improve Memory Usage?**
Previous by thread:
**Table iterator bounds problem**
Next by thread:
**Table alignment**
| |