Dear all
I'm dummy in perl.
I would like to load a two dimensional table with a scalar table (this table
contain split string line by line ) from a file.
It's working with this way but it's take lot of memory and it's stop with
memory overflow.
I would like to use (DBM or PDL module instead but I'm not convenient with
that.)
$vector_table[$stringlength][$vectors+1]=0;
$int=0;$int1=0;
my @indexed_vector;
while ($int != $customvector)
{
@indexed_vector=split(//,@AVCOUT[$int]);
$int1=0;
while ($int1 != $stringlength) {
$vector_table[$int1][$int] =
(@indexed_vector[$int1]);
$int1++;}
$int++; }
Best regards
-----Original Message-----
From: mraptor [mailto:[email protected]]
Sent: mardi 12 novembre 2013 21:11
To: [email protected]
Subject: [Perldl] Fwd: Random generation...
thanks... my mistake with the byte thing..
What I want to do is to generate normally distributed random numbers, where the
range is humongous (fe: 2^1000) I just tried :
>$n = 1000
> p grandom(3) * ((2**$n)/2) + sqrt((2**$n))/2
[-1.9906798e+300 -3.9087665e+300 -5.6272303e+300]
those seem like a random numbers !! but why negative ?
Do you think I should use Math::BigInt
On Mon, Nov 11, 2013 at 11:55 AM, Craig DeForest <[email protected]>
wrote:
> The issue is that grandom doesn't work properly on integer types,
> since it makes a distribution with mean 0 and stddev 1. It's a bit
> awkward, but you can use
>
> $vals = (grandom($n) * $stdev + $mean)->rint->byte
>
> instead.
>
>
> On Nov 11, 2013, at 8:59 AM, mraptor <[email protected]> wrote:
>
>> Is there are way to generate random values based on Normal distribution.
>> The same like rnorm() in R-language.
>>
>>> round( rnorm(3,mean=2^n/2,sd=sqrt(2^n)/2) )
>> [1] 524758 524540 524647
>>
>> I see there is grandom() funtion, but it requires some sort of lib (ndtri) ?
>>
>> pdl> p grandom(byte,1)
>>
>> ndtri domain error
>> [0]
>>
>>
>> thanks
>>
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>>
>
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