PDL::Slices#
Synopsis#
use PDL;
my $a = sequence(10);
my $s = $a->slice("2:5");
my $i = $a->index(pdl [1, 3, 5]);
my $d = $a->dice([2, 4, 6]);
Functions#
Other Functions#
slice#
$pdl->slice($spec) – extract a rectangular slice of an ndarray.
xchg#
xchg($pdl, $dim1, $dim2)
mv#
mv($pdl, $from, $to)
reorder#
reorder($pdl, @dims)
reshape#
reshape($pdl, @new_dims)
flat#
flat($pdl)
diagonal#
diagonal($pdl, $dim1, $dim2)
dice#
dice($pdl, @index_lists)
dice_axis#
dice_axis($pdl, $dim, $indices_pdl)
uniq#
uniq($pdl)
uniqvec#
uniqvec($pdl)
hclip#
hclip($pdl, $max)
lclip#
lclip($pdl, $min)
clump#
clump($pdl, $n)
dummy#
dummy($pdl, $dim, $size?)
lags#
lags($pdl, $nthdim, $step, $nlags)
splitdim#
splitdim($pdl, $dim, $size)
rotate#
rotate($pdl, $shift)
mslice#
mslice($pdl, @args) — slice variant where each arg is a scalar (start, truncated to int) or [start, stop, inc?] arrayref. Mirrors Core.pm:2545 *PDL::mslice = \&PDL::slice combined with the numeric-arg parsing in PDL::NiceSlice’s mslice translation.
range#
range($source, $index, $size?, $boundary?) — extract elements (or rectangular sub-cubes with $size) at N-D coordinates given by $index.
make_physdims#
make_physdims($pdl) — no-op stub. Upstream triggers deferred trans evaluation; our slices materialize eagerly, so nothing to do except return self.
transpose_entry#
Public forwarder for PDL::t (MatrixOps alias).
transpose#
transpose($pdl) — transpose a 2D matrix (swap dims 0 and 1). Same as $pdl->xchg(0,1).
rle#
rle($pdl) — run-length encoding. Returns ($lengths, $values) — two PDLs: run lengths and corresponding values. For 2D+ input, operates over the first dimension (broadcasting).
rld#
rld($lengths, $values) — run-length decoding (inverse of rle). Returns a PDL reconstructed from run lengths and values.
ins#
ins($target, $source, @pos) — insert $source into $target at position @pos. Copies source data into target starting at the given coordinates. Modifies $target in-place, returns $target.
sec#
sec($pdl, $x1, $x2, $y1, $y2, ...) — extract a rectangular section. Deprecated upstream; equivalent to $pdl->slice("$x1:$x2,$y1:$y2,..."). Takes pairs of (start, end) indices for each dimension.