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Re: RFC: PDL Cheat Sheet

by zentara (Archbishop)
on Jan 03, 2007 at 13:50 UTC ( #592761=note: print w/replies, xml ) Need Help??

in reply to RFC: PDL Cheat Sheet

Here is an interesting tidbit for people just learning. You always want to print your piddles to see what you are doing wrong, but PDL has a limit set of 30000 elements, and if your piddles exceed that, you get the dreaded 'TOO LONG TO PRINT' error message. Fortunately the PDL modules have easy-to-override subs, so you can use this module to print any size piddle.

Include this somewhere in your PERL5LIB, and

use pdldump;

# file package PDL::Core; my $max_elem = 10000000; # set your max here sub PDL::Core::string { my ( $self, $format ) = @_; if ( $PDL::_STRINGIZING ) { return "ALREADY_STRINGIZING_NO_LOOPS"; } local $PDL::_STRINGIZING = 1; my $ndims = $self->getndims; if ( $self->nelem > $max_elem ) { return "TOO LONG TO PRINT"; } if ( $ndims == 0 ) { if ( $self->badflag() and $self->isbad() ) { return "BAD"; } else { my @x = $self->at(); return ( $format ? sprintf( $format, $x[ 0 ] ) : "$x[0]" ); } } return "Null" if $self->isnull; return "Empty" if $self->isempty; # Empty piddle local $PDL::Core::sep = $PDL::use_commas ? "," : " "; local $PDL::Core::sep2 = $PDL::use_commas ? "," : ""; if ( $ndims == 1 ) { return PDL::Core::str1D( $self, $format ); } else { return PDL::Core::strND( $self, $format, 0 ); } } 1;

I'm not really a human, but I play one on earth. Cogito ergo sum a bum

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[Discipulus]: oh and dont miss my last poetry!
[marioroy]: Hello all. After several attempts, am able to move forward and will soon release a Parallel:: ForkManager compatible MCE::Hobo:: Manager, also MCE::Hobo::Simple, and refactored MCE::Hobo engine supporting multiple instances. Wait works beautifully.
[marioroy]: MCE::Shared has been refined that it allows sharing Tie::File and hash objects containing {fh} key.
[marioroy]: It's taken so long to take Hobo to a new level. Threads-like and Parallel:: ForkManager management capaiblities.
[marioroy]: This will complete the 4 years in the making and likely time to move on to something els.
[marioroy]: s/els/else.

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