PDL2(1) User Contributed Perl Documentation PDL2(1)NAMEpdl2 - Simple shell (version 2) for PDL
SYNOPSIS
Use PDL interactively:
%> pdl2
pdl> $a = sequence(10) # or any other perl or PDL command
pdl> print "\$a = $a\n";
$a = [0 1 2 3 4 5 6 7 8 9]
DESCRIPTION
The "pdl2" program, also known as the Perldl2 shell, is a second
generation version of the original "perldl" interactive PDL shell. It
attempts to be backward compatible in usage while providing improved
features, better support for Perl syntax, and an more easily extended
framework based on the Devel::REPL shell.
If you have Devel::REPL version 1.003011 or later, then "pdl2" will
start with full functionality. If Devel::REPL is not installed or
found then "pdl2" will print a warning and run the legacy "perldl"
shell command instead.
By default, command lines beginning with the default prompt of either
"pdl2" or "perldl" (one of 'pdl> ', 'PDL> ', or 'perldl> ') will have
the prefix string and surrounding whitespace stripped. This allows for
easy cut-and-paste from sample PDL shell sessions or other examples
into another PDL shell session.
FUNCTIONS
do_print
Toggle print-by-default on and off (default value: off)
By default, "pdl2" does not print the results of operations since the
results can be very large (e.g., a small 640x480 RGBA image is still
more than 1_000_000 elements). However, for experimenting and
debugging more complex structures, it helps to see the results of every
operation. The "do_print" routine allows you to toggle between the
default "quiet" operation and a full Read, Evaluate, Loop style.
pdl> $a = pdl(3,2)
pdl> do_print
1
pdl> $a = pdl(3,2)
$PDL1 = [3 2];
pdl> do_print
pdl> $a = pdl(3,2)
VARIABLES
$PDL::toolongtoprint
The maximal size pdls to print (defaults to 10000 elements). This
is not just a "perldl" or "pdl2" variable but it is something that
is usually needed in an interactive debugging session.
SEE ALSO
perldl, Devel::REPL
perl v5.18.1 2013-05-12 PDL2(1)
