Manual Reference Pages - PDL::DBG (3)
PDL::Dbg - functions to support debugging of PDL scripts
$c = $a->slice("5:10,2:30")->px->diagonal(3,4);
This packages implements a couple of functions that should come in
handy when debugging your PDL scripts. They make a lot of sense while
youre doing rapid prototyping of new PDL code, lets say inside the
perldl or pdl2 shell.
Print info about a piddle (or all known piddles)
pdl> $b += $a->clump(2)->px(clumptest)->sumover
pdl> $a->px(%C (%A) Type: %T) # prints nothing unless $PDL::debug
pdl> $PDL::debug = 1
pdl> $a->px(%C (%A) Type: %T)
PDL (52433464) Type: Double
This function prints some information about piddles. It can be invoked
as a class method (e.g. PDL->px ) or as an instance method (e.g.
The output of px will be determined by the default formatting string
that is passed to the info method (unless you pass a string
containing % to px when invoking as an instance method, see
above). This default string is stored in $PDL::Dbg::Infostr and the
default output format can be accordingly changed by setting this
variable. If you do this you should also change the default title
string that the class method branch prints at the top of the listing
to match your new format string. The default title is stored in the
invoked as a class method
it prints info about all piddles found in the current package
(excluding my variables). This comes in quite handy when you are
not quite sure which pdls you have already defined, what data they
hold , etc. px is supposed to support inheritance and prints info
about all symbols for which an isa($class) is true. An optional
string argument is interpreted as the package name for which to print
The default package is that of the caller.
invoked as an instance method
it prints info about that particular piddle if $PDL::debug is
true and returns the pdl object upon completion. It accepts an
optional string argument that is simply prepended to the default info
if it doesnt contain a % character. If, however, the argument
contains a % then the string is passed to the info method to
control the format of the printed information. This can be used to
achieve customized output from px. See the documentation of
PDL::info for further details.
For historical reasons vars is an alias for px.
Alias for px
There are probably some. Please report if you find any. Bug reports
should be sent to the PDL mailing list email@example.com.
Copyright(C) 1997 Christian Soeller (firstname.lastname@example.org).
All rights reserved. There is no warranty. You are allowed
to redistribute this software / documentation under certain
conditions. For details, see the file COPYING in the PDL
distribution. If this file is separated from the PDL distribution,
the copyright notice should be included in the file.
|perl v5.20.3 ||DBG (3) ||2015-08-12 |
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