perlmeditation
lin0
<p>Greetings Fellow Monks,</p>
<p>Motivated by [BrowserUk] [id://585393|reply] to a node on [id://585260|PDL references] and inspired by the [id://216602], I decided to put together this [http://pdl.perl.org/|Perl Data Language (PDL)] cheat sheet.</p>
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<code>
PDL 2.4.3 cheat sheet v2 by Lino Ramirez, Lino.M.Ramirez at gmail.com
NOTE:
Piddles are stored in (column, row) order
STARTING & QUITTING THE SHELL GETTING HELP
perldl exit quit help 'func' ? 'func'
apropos 'func' ?? 'func'
SHELL CONFIGURATION FILES sig 'func'
$HOME/.perldlrc usage 'func'
PDL/default.perldlrc demo
local.perldlrc
USING AUTOLOADER
WRITING PERL SCRIPTS use PDL::AutoLoader;
use PDL; # environment variable PDLLIB defines
# the search path for AUTOLOADER module
CREATING PIDDLES
new pdl topdl TYPE CONVERSIONS
null zeroes ones ushort float long convert
identity random grandom byte double short
randsym sequence
xvals yvals zvals FILE I/O
xlinvals ylinvals zlinvals fits wfits rcols wcols rcube
rvals axisvals allaxisvals rpic wpic rim wim rgrep
OPERATORS COPYING PIDDLES
+ - * / ** > < $pnew = pdl( $pold );
>= <= == != << >> & $pnew = $pold->copy;
| ^ += -= *= /= %=
**= >>= <<= &= |= ^= EXTRACTING INFORMATION
<=> ! % ++ -- slice dice dice_axis diagonal
ADDITIONAL OPERATORS LOCATING INFORMATION
.= assignation index index2d indexND where
x matrix multiplication which whichND which_both
GETTING PIDDLES' PROPERTIES MODIFYING PIDDLES
? vars PDL->px info list listindices one2nd
dims getdim getndim set clip rotate xchg
howbig nelem at reshape mv reorder dummy
transpose clump splitdim
COMBINING PIDDLES
append glue cat dog ELEMENTARY MATH FUNCTIONS
abs acos acosh asin asinh
VECTOR FUNCTIONS atan atan2 atanh cos cosh
inner outer uniq sin sinh tan tanh sqrt
in setops norm ceil floor rint exp log log10
DATA ANALYSIS SPECIALIZED MATH FUNCTIONS
stats statsover qsort bessj0 bessjn bessy0 bessyn
sum sumover cumusumover erf erfc erfi intover
max maximum maximum_ind lags lgamma pcoef simplex
avg average qsorti fibonacci
min minimum minimum_ind
minmax minmaximum median DATA INTERPOLATION
medover oddmedian oddmedover fitgauss1d fitgauss1dr fitpoly1d
prod prodover cumuprodover interpol interpolate ninterpol
hist histogram histogram2d interpND lmfit
and and2 andover polfit pvalue polycoef
or or2 orover polyfit polyvalue
MATRIX OPERATIONS IMAGE PROCESSING
inv matinv eigens_sym eigens cquant rgbtogr rot2d med2d conv2d
svd eigsys determinant det simq warp2d rebin convolveND
TWO-DIMENSIONAL PLOTTING THREE-DIMENSIONAL PLOTTING
use PDL::Graphics::PGPLOT; use PDL::Graphics::TriD;
dev env line points errb bin imag3d imag3d_ns imagrgb points3d
cont ctab vect poly imag line3d lattice3d mesh3d grabpic3d
circle ellipse rectangle text keeptwiddling3d nokeeptwiddlin3d
legend draw_wedge release hold twiddle3d hold3d release3d
FOURIER TRANSFORM FUNCTIONS COMPLEX NUMBERS FUNCTIONS
use PDL::FFT; Cabs Carg Cp2r Cr2p i2C r2C
fft fftnd realfft realifft
ifft ifftnd cdiv cmul MISCELANEOUS FUNCTIONS
kernctr fftconvolve inplace trace thread
band bandover bitnot bor borover
PDL MODULE DEPENDENCIES all any isempty zcheck
Perl 5.6.1+ (5.8.x recommended)
ExtUtils::MakeMaker (latest version) LINKS
C-compiler Fortran compiler pdl.perl.org
PGPLOT libraries & C-binding (PGPLOT) perlmonks.org
OpenGL or Mesa (TriD) search.cpan.org/dist/PDL/
netpbm package (PDL::IO::Pic) pdl.sourceforge.net/PDLdocs/
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<p>As always, any comment will be welcome</p>
<p>Cheers,</p>
[lin0]
<p><b>Updates:</b></p>
<ol>
<li>Added the references suggested by [zentara]</li>
<li>Added FFT references and shuffled things around to make them fit</li>
</ol>