I'm using Perldl 2.4.3 under cygwin.
perldl> $z = zeroes(3,3)
perldl> $cz = &PDL::Complex::r2C($z);
perldl> print $cz
[
[0+0i 0+0i 0+0i]
[0+0i 0+0i 0+0i]
[0+0i 0+0i 0+0i]
]
Fair enough, a 3 by 3 array of complex. Well, maybe.
perldl> print ref($cz)
PDL::Complex
So it knows it holds complex numbers.
perldl> print $cz->at(1,1)
Invalid position at /usr/lib/perl5/site_perl/5.10/i686-cygwin/PDL
/Core.pm line 2377.
So what does it think the dimensions are?
perldl> print $cz->dims()
2 3 3
perldl>
Now, complex numbers are supposed to interact correctly with "normal"
reals, but I can't access elements of arrays of Complex and arrays
of reals in the same way in the code, so I need two paths through my
code.
Is there something like this (rough sketch) already?:
package PDL::Complex;
sub at {
my $self = shift;
my $x = shift;
my $y = shift;
return &PDL::at($self,0,$x,$y) + &PDL::at($self,1,$x,$y) * i;
}
Is there a reason I would not want to add that to my code, if not?
Alternatively, why is my expectation on this wrong? What should I
be looking for, to pluck a complex value from a 2D array of numbers,
in a complx/real agnostic way?
Thank you,
Hugh
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