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 pdldump.pm
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;
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|