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542:, with a C/PP interface layer. Many of the supplied functions are written in PDL itself. PP is available to the user to write C-language extensions to PDL. There is also an Inline module (Inline::Pdlpp) that allows PP function definitions to be inserted directly into a Perl script; the relevant code is low-level compiled and made available as a Perl subroutine.
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Sánchez SF, Pérez E, Sánchez-Blázquez P, González JJ, Rosález-Ortega FF, Cano-Dà az M, López-Cobá C, Marino RA, Gil de Paz A, Mollá M, López-Sánchez AR, Ascasibar Y, Barrera-Ballesteros J (April 2016). "Pipe3D, a pipeline to analyze
Integral Field Spectroscopy Data: I. New fitting philosophy of
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or general and generalized linear modeling methods such as ANOVA, linear regression, PCA, and logistic regression. Examples of PDL usage for regression modelling tasks include evaluating association between education attainment and ancestry differences of parents, comparison of RNA-protein
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of numeric or character values. All of the standard Perl operators are overloaded so that they can be used on PDL objects transparently, and PDLs can be mixed-and-matched with normal Perl scalars. Several hundred object methods for operating on PDLs are supplied by the core modules.
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of physical systems, and graphical plotting and presentation. Simple operations are automatically vectorized across complete arrays, and higher-dimensional operations (such as matrix multiplication) are supported.
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Abdellaoui A, Hottenga JJ, Willemsen G, Bartels M, van
Beijsterveldt T, Ehli EA, Davies GE, Brooks A, Sullivan PF, Penninx BW, de Geus EJ, Boomsma DI (Mar 2015).
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notation, so that the user can combine and operate on large arrays with simple expressions. In this respect, PDL follows in the footsteps of the
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The PDL API uses the basic Perl 5 object-oriented functionality: PDL defines a new type of Perl scalar object (
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interaction profiles that needs regression-based normalization and analysis of spectra of galaxies.
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roots of Perl, PDL borrows from several different modules for graphics and plotting support.
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called a "PDL", or "ndarray") that acts as a Perl scalar, but that contains a conventional
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Perl I/O libraries to read and write data in hundreds of standard and niche file formats.
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The commands used in the shell are Perl statements that can be used in a program with
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will generally cause the same operation to happen to each 2-D layer of the cube.
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PDL provides facilities to read and write many open data formats, including
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language: the expression syntax is a variation on standard mathematical
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forms may be combined. Subroutines may be loaded either via a built-in
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PDL borrows from Perl at least three basic types of program structure:
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modules are supported for 2-D graphics and plotting applications, and
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provides image file I/O (though FITS is supported natively).
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An installation of PDL usually comes with an interactive
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https://github.com/PDLPorters/pdl/releases/tag/2.089
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188:array programming extensions to the
588:List of numerical-analysis software
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16:Array programming library for Perl
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797:: 21–53.
393:known as
251:data cube
38:Developer
789:FIT3D".
775:24398258
724:25734509
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561:See also
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26:Paradigm
809:Bibcode
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715:4347978
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614:20 June
540:Fortran
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140:Website
125:License
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223:vector
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551:typed
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310:Prima
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346:MPEG
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