Pdl
PDL::FAQ is a Perl module for frequently asked questions about PDL. This is a considerably reworked version of the PDL FAQ. As such many errors might have crept in and many updates might not have made it in. You are explicitly encouraged to let us know about questions which you think should be...
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PDL::GSL::INTERP is a PDL interface to Interpolation routines in GSL. SYNOPSIS use PDL; use PDL::GSL::INTERP; my $x = sequence(10); my $y = exp($x); my $spl = PDL::GSL::INTERP->init(cspline,$x,$y); my $res = $spl->eval(4.35); $res = $spl->deriv(4.35); $res = $spl->deriv2(4.35);...
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PDL::GSL::INTEG is a PDL interface to numerical integration routines in GSL. This is an interface to the numerical integration package present in the GNU Scientific Library, which is an implementation of QUADPACK. Functions are named gslinteg_{algorithm} where {algorithm} is the QUADPACK...
Platforms: *nix
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PDL::Parallel::MPI Perl module contains routines to allow PDL objects to be moved around on parallel systems using the MPI library. SYNOPSIS use PDL; use PDL::Parallel::MPI; mpirun(2); MPI_Init(); $rank = get_rank(); $a=$rank * ones(2); print "my rank is $rank and $a is $an";...
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PDL::GSL::RNG is a PDL interface to RNG and randist routines in GSL. SYNOPSIS use PDL; use PDL::GSL::RNG; $rng = PDL::GSL::RNG->new(taus); $rng->set_seed(time()); $a=zeroes(5,5,5) $rng->get_uniform($a); # inplace $b=$rng->get_uniform(3,4,5); # creates new pdl.
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PDL::Fit::LM is a Levenber-Marquardt fitting routine for PDL. Currently, only Levenberg-Marquardt fitting is implemented. Other procedures should be added as required. For a fairly concise overview on fitting see Numerical Recipes, chapter 15 "Modeling of data". SYNOPSIS use PDL::Fit::LM;...
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PDL::Reduce is Perl module that helps to reduce functions for PDL. Many languages have a reduce function used to reduce the rank of an N-D array by one. It works by applying a selected operation along a specified dimension. This module implements such a function for PDL by providing a...
Platforms: *nix
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PDL::NiceSlice Perl module contains a nicer slicing syntax for PDL. SYNOPSYS use PDL::NiceSlice; $a(1:4) .= 2; # concise syntax for ranges print $b((0),1:$end); # use variables in the slice expression $a->xchg(0,1)->(($pos-1)) .= 0; # default method syntax $idx = long 1, 7, 3, 0; # a...
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PDL::IO::Pic is a image I/O for PDL. Image I/O for PDL based on the netpbm package. This package implements I/O for a number of popular image formats by exploiting the xxxtopnm and pnmtoxxx converters from the netpbm package (which is based on the original pbmplus by Jef Poskanzer). Netpbm...
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PDL::API is a Perl module for making piddles from Perl and C/XS code. A simple cookbook how to create piddles manually. It covers both the Perl and the C/XS level. Additionally, it describes the PDL core routines that can be accessed from other modules. These routines basically define the PDL...
Platforms: *nix
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PDL::Indexing Perl module contains a tutorial on how to index piddles. This manpage should serve as a first tutorial on the indexing and threading features of PDL. This manpage is still in alpha development and not yet complete. "Meta" comments that point out deficiencies/omissions of this...
Platforms: *nix
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PDL::Transform::Cartography Perl module contains useful cartographic projections. SYNOPSIS # make a Mercator map of Earth use PDL::Transform::Cartography; $a = earth_coast(); $a = graticule(10,2)->glue(1,$a); $t = t_mercator; $w = pgwin(xs); $w->lines($t->apply($a)->clean_lines());...
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PDL::IO::Misc is a Perl module with misc IO routines for PDL. rcols() Read ASCII whitespaced cols from a file into piddles and perl arrays (also see "rgrep()"). There are two calling conventions - the old version, where a pattern can be specified after the filename/handle, and the new...
Platforms: *nix
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PDL::Transform is a Perl module that coordinate transforms, image warping, and N-D functions. SYNOPSIS use PDL::Transform; my $t = new PDL::Transform:: ( ) $out = $t->apply($in) # Apply transform to some N-vectors (Transform method) $out = $in->apply($t) # Apply transform to some...
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PDL::MatrixOps Perl module contains some useful Matrix operations. SYNOPSIS $inv = $a->inv; $det = $a->det; ($lu,$perm,$par) = $a->lu_decomp; $x = lu_backsub($lu,$perm,$b); # solve $a x $x = $b PDL::MatrixOps is PDLs built-in matrix manipulation code. It contains utilities for many...
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PDL::Graphics::LUT is a Perl module that provides access to a number of look-up tables. SYNOPSIS use PDL::Graphics::PGPLOT; use PDL::Graphics::LUT; # what tables are available my @tables = lut_names(); # get the reversed colour table smooth, # with the gamma intensity ramp my ( $l,...
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PDL::Bad - PDL does not process bad values. PDL has been compiled with WITH_BADVAL either 0 or undef, so it does not contain any bad-value support code. Actually, a number of methods are defined, but they are only placeholders to make writing other code, that has to handle WITH_BADVAL being...
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PDL::Graphics::AquaTerm is a Perl module that provides access to the AquaTerm Mac OS-X graphics terminal. SYNOPSIS # example 1 use PDL; use PDL::Graphics::LUT; use PDL::Graphics::AquaTerm; my $x_size = 255; my $y_size = 255; aquaOpen({SIZE_X => $x_size, SIZE_Y => $y_size});...
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PDL::Graphics::X is a PDL OO access to X windows. SYNOPSIS # example 1 use PDL; use PDL::Graphics::X; my $x_size = 255; my $y_size = 255; my $win1 = PDL::Graphics::X->new({SIZE_X => $x_size, SIZE_Y => $y_size}); my $a = xvals(zeroes(byte,$x_size,$y_size)); $win1->imag($a); # example...
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PDL::Fit::Levmar is a Perl module with Levenberg-Marquardt fit/optimization routines. Levenberg-Marquardt routines for least-squares fit to functions non-linear in fit parameters. This module provides a PDL ( PDL::PDL ) interface to the non-linear fitting library levmar (written in C). Levmar...
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