... are demonstrated here. $bullseye = zeroes (41 2, 351)
creates a piddle with 41 2 columns and 351 rows, where every element is 0. (ones() creates
a piddle with every element 1.) $bullseye is thus ... $hb{12 34} ' # Increment if true (never).
use PDL::IO::FastRaw;
$brain = readfraw("brain", {Dims => [351 ,41 2], ReadOnly => 1,});
$supplement = sec($brain, 85, 376, 40...
... Figure 15-3, we get
54. 9952963760691 + 2.017011 642 1 245 4x. That is, our best estimate of the relation between
sales and hits is that sales = 2.017011 642 1 245 4 × the number of hits + 54. 9952963760691.
The ... $gabriel_volume, but area is $gabriel_area.\n";
The result is:
Volume is 3.209995072002 84, but area is 43 .44 448 340 63 54.
Figure 16-1.
Three sample points
If you have...
... sorting is, how to do it efficiently using Perl& apos;s own sort
function, what comparing actually means, and how you can code your own sort algorithms with
Perl.
An Introduction to Sorting
Sorting ... 103
Consider three records from a telephone book:
Munro, Alice 15 Brigham Road 623— 244 8
Munro, Alice 48 Hammersley Place 48 9—1073
Munro, Alicia 62 Evergreen Terrace 623—6099
The las...
... follows:break
@scores = qw (40 53 77 49 78 20 89 35 68 55 52 71);
print percentile(\@scores, 90), "\n";
Page 145
This will be:
77
Beating O (N log N)
All the sort algorithms so far have ... browse pp_ctl.c in the Perl source code.continue
*
The better qsort() implementations actually are also hybrids, often quicksort combined with
insertion sort.
Page 156
Table 4- 1 summar...
... 8 -47 ):
use Graph::Directed;
my $g = Graph::Directed->new();
$g->add_weighted_path(qw(a 1 b 4 c 1 d));
$g->add_weighted_path(qw(a 3 f 1 e 2 d));
$g->add_weighted_edges(qw(a 2 c a 4 ... the first time
my $M = $V * ($V 1);
$M = $M / 2 if $G->undirected;
return ($M /4, 3*$M /4, $M);
}
Page 297
With this helper function. we can define methods like the following:
# density...