Hi Ingo,
I’m getting bounces from pdl-devel the last couple of days, and the archive
isn’t showing new messages including yours, but I did receive your message via
pdl-devel, so I don’t know what’s going on.
To answer your point: which bits of the docs explicitly says clump(1..-1)
should work? Because that’s a Perl expression that will make an empty list,
since -1 is a number that’s lower than 1, which is why you’re getting an error.
The second error you’re showing is because dimensions are numbered in a
zero-based way, so ndims (which is 14) will be the 15th one, which is too big,
as the error explicitly tells you.
Best regards,
Ed
________________________________
From: Ingo Schmid via pdl-devel <pdl-devel@lists.sourceforge.net>
Sent: Tuesday, May 28, 2024 7:26:59 AM
To: pdl-devel <pdl-devel@lists.sourceforge.net>
Subject: Re: [Pdl-devel] clump glitch
could not send mail.
On 27.05.24 5:27 PM, Ingo Schmid wrote:
Hi,
$x->clump (1 .. -1) should work according to the docs, but it apparently
doesn't. boundaries 0 ... ndims -1 work fine.
pdl> help $k2
This variable is Float D [2,772096,1,1,1,1,30,1,1,1,1,1]
pdl> $k2= $k->clump(2 .. ($k->ndims-1))
Best
Ingo
pdl> help $k2
This variable is Float D [2,1,23162880] -C 0.00KB
pdl> $k2= $k->clump(2 .. (-1))
Runtime error: Usage: PDL::_clump_int(PARENT,CHILD,n) (you may leave output
variables out of list) at (eval 692) line 5.
pdl> $k2= $k->clump(2 .. ($k->ndims))
Runtime error: dimension index 14 larger than greatest dimension at
/ceph/mri.meduniwien.ac.at/departments/physics/metabolism/lab/cardiac_31P/perlbrew/perls/perl-5.36.0/lib/site_perl/5.36.0/x86_64-linux/PDL/Core.pm
line 1587.
PDL::clump(MRI::ReadData=HASH(0x559ebeffb570), 2, 3, 4, 5, 6, 7, 8, ...)
called at (eval 693) line 5
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