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MathGroup Archive 2001

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Re: NEED HELP! Mathematica seems to "forget" that a package has been loaded

  • To: mathgroup at smc.vnet.net
  • Subject: [mg26548] Re: [mg26487] NEED HELP! Mathematica seems to "forget" that a package has been loaded
  • From: "Rudy Cazabon" <raygunprez at earthlink.net>
  • Date: Fri, 5 Jan 2001 00:34:00 -0500 (EST)
  • References: <92gt96$ksh@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hey Bob...

Thanks for the help.  Actually, I tracked down the error...and it is an
error in my ways.

Sincerely,
Rudy Cazabon


<BobHanlon at aol.com> wrote in message news:92gt96$ksh at smc.vnet.net...
>
> You did not give any examples so I will just give you some examples to
check
> your syntax.
>
> Needs["Statistics`DiscreteDistributions`"];
>
> dist = PoissonDistribution[mu];
>
> Sum[PDF[dist, x], {x, Sequence @@ Domain[dist]}]
>
> 1
>
> Mean[dist] == Sum[x*PDF[dist, x], {x, Sequence @@ Domain[dist]}]
>
> True
>
> {PDF[dist, x], CDF[dist, x], Variance[dist], PDF[PoissonDistribution[7],
10]}
>
> {mu^x/(E^mu*x!), GammaRegularized[Floor[x] + 1, mu], mu,
>   40353607/(518400*E^7)}
>
> N[PDF[PoissonDistribution[7], 5]]
>
> 0.12771666829228964
>
>
> Bob Hanlon
>
> In a message dated 12/28/00 3:40:42 AM, raygunprez at earthlink.net writes:
>
> >I am still relatively new to the Mathematica environment, so I please
> >request that you have some patience.
> >
> >I am encountering a situation where when I issue the command
> ><<Statistics`DiscreteDistributions` and attempt to use any of the
> >functions therein that during the evaluation of that cell that it does
> >
> >NOT evaluate to a numerical answer.
> >
> >This is just one example but there are several other packages such as
> >Graphics and Geometry where this is the case...Mathematica responds that
> >
> >such package has loaded.  However, the functions don't evaluate.
> >
> >If you happen to know of any tips, tricks, or procedures to overcome
> >this I would truly appreciate it.
> >
>
>



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