PDL 2.4.3 reference sheet
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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
CREATING PIDDLES
Stored in (column, row) order
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)      
C-compiler   Fortran compiler             
PGPLOT libraries & C-binding (PGPLOT)     
OpenGL or Mesa  (TriD)                   
netpbm package (PDL::IO::Pic)

LINKS
www.johnlapeyre.com/pdl/pdldoc/newbook/
pdl.perl.org
perlmonks.org
search.cpan.org/dist/PDL/
pdl.sourceforge.net/PDLdocs/
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