Re: Why can't I call Random[NormalDistribution[10.0,0.0]]?
- To: mathgroup at smc.vnet.net
- Subject: [mg56141] Re: [mg56106] Why can't I call Random[NormalDistribution[10.0,0.0]]?
- From: DrBob <drbob at bigfoot.com>
- Date: Sat, 16 Apr 2005 03:53:04 -0400 (EDT)
- References: <200504150848.EAA11604@smc.vnet.net>
- Reply-to: drbob at bigfoot.com
- Sender: owner-wri-mathgroup at wolfram.com
rand[mu_,sigma_?Positive]:=Random@NormalDistribution[mu,sigma]
rand[mu_, 0 | 0.] := mu
MapThread[rand,{Range@3,Range[0,2]}]
{1, 3.0837, 1.44367}
You'd have
MapThread[rand, {array1, array2}]
Bobby
On Fri, 15 Apr 2005 04:48:13 -0400 (EDT), <barrowes at alum.mit.edu> wrote:
> Why can't I call Random[NormalDistribution[10.0,0.0]]?
>
> I get the error:
> NormalDistribution::posscale: The scale parameter 0.` is expected to be
> positive.
>
> It seems like I should get a random number with mean 10 and sigma 0. Or
> in other words, the result should 10 every time.
>
> In my program I want an array of number taken from different
> distributions
> Map[Random,Thread[NormalDistribution[Array1,Array2]]]
>
> And elements of Array2 may be 0 for which I woudl ike the corresponding
> value in Array1 returned. In fact,
> Random[NormalDistribution[10.0,0.000000001]]
> does return 10.0 as expected.
>
> This worked in 5.1, but now returns this error in 5.1.1.
>
> Anyone have an easy workaround?
>
> Thanks,
> Ben Barrowes
>
>
>
>
--
DrBob at bigfoot.com
- References:
- Why can't I call Random[NormalDistribution[10.0,0.0]]?
- From: barrowes@alum.mit.edu
- Why can't I call Random[NormalDistribution[10.0,0.0]]?