[Bioperl-l] (no subject)

[Alexey Morozov]

2012/10/22 Roy Chaudhuri <roy.chaudhuri at gmail.com>

> Hi Alexey,
>
> I think the problem here is that you're calling the sub directly using
> RandomOrders::generate, but the sub expects to be called as a method,
> which implicitly puts the class name as the first argument in @_. So try
> something like:
>
> my $dataset=RandomOrders->**generate(\@names, $avg_length, 100);
>
> which is equivalent to:
>
> my $dataset=RandomOrders::**generate('RandomOrders', \@names, $avg_length,
> 100);
>
> See perldoc perlobj for full details.
>
> Cheers,
> Roy.
>
>
> On 22/10/12 09:46, Alexey Morozov wrote:
>
>> Dear colleagues, need help. I have this little snippet of code:
>>
>> ....more code.... my @names; foreach(1..$taxa_amount) { push @names,
>> "Taxa$_"; } my
>> $dataset=RandomOrders::**generate(\@names,$avg_length,**100); ....more
>> code....
>>
>> And it throws an exception:
>>
>> ------------- EXCEPTION: Bio::Root::Exception ------------- MSG: Must
>> specify a valid ARRAY reference to the parameter -TAXA, did you
>> forget a leading '\'? for 5 STACK: Error::throw STACK:
>> Bio::Root::Root::throw /usr/share/perl5/Bio/Root/**Root.pm:472 STACK:
>> Bio::Tree::RandomFactory::new
>> /usr/share/perl5/Bio/Tree/**RandomFactory.pm:170 STACK:
>> RandomOrders::generate RandomOrders.pm:38 STACK: ./simulator:145
>> ------------------------------**-----------------------------
>>
>> OK, so it must be fault of RandomOrders.pm. Let's look there:
>>
>> sub generate { #Generates random Order_set objects. Is a class
>> method my ($class, $names, $mean, $seq_length)=@_; my
>> $factory=Bio::Tree::**RandomFactory->new(-samples=>$**names); my
>> $tree=$factory->next_tree; .....more code.... }
>>
>> So main script passes an arrayref to &generate, &generate puts it to
>> scalar and passes said scalar (ie arrayref) to
>> Bio::Tree::RandomFactory. It must all work perfectly, but it does
>> not. Where am I wrong?
>>
>> Alexey Morozov LIN SB RAS Irkutsk, Russia
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>>
>>  Thanks, Roy. Now it works.
Alexey