# -*-perl-*-
# Test ->slice(). This is not yet good enough: we need
# nasty test cases,
use PDL::LiteF;
use PDL::Types;
# kill INT,$$ if $ENV{UNDER_DEBUGGER}; # Useful for debugging.
# PDL::Core::set_debugging(1);
use strict;
use Test::More;
plan tests => 48;
sub tapprox {
my($a,$b) = @_;
if((join ',',$a->dims) ne (join ',',$b->dims)) {
diag "APPROX: $a $b\n";
diag "UNEQDIM\n";
return 0;
}
my $d = max( abs($a-$b) );
if($d >= 0.01) {
diag "APPROX: $a $b\n";
diag "# APPROXFAIL: $a $b\n";
}
$d < 0.01;
}
my $a = PDL->pdl([[5,4,3],[2,3,1.5]]);
ok(tapprox($a->average(), PDL->pdl([4, 2.16666])), "average"); # 1
ok(tapprox($a->sumover(), PDL->pdl([12, 6.5])), "sumover"); # 2
ok(tapprox($a->prodover(), PDL->pdl([60, 9])), "prodover"); # 3
my $b = PDL->pdl(4,3,1,0,0,0,0,5,2,0,3,6);
# diag "B: $b\n";
my $c = ($b->xvals) + 10;
# diag "C: $c\n";
# diag "BW: ", $b->where, "\n";
ok(tapprox($b->where($b>4), PDL->pdl(5,6)), "where with >"); # 4
ok(tapprox($b->which, PDL->pdl(0,1,2,7,8,10,11)), "which"); # 5
# diag "B, ",$b->which();
# diag "C: $c\n";
# diag "\nCI, ", $c->index($b->which());
# diag "D\n";
ok(tapprox($c->where($b), PDL->pdl(10,11,12,17,18,20,21)), "where with mask"); # 6
##############################
# originally in pptest
$a = ones(byte,3000);
dsumover($a,($b=null));
is($b->get_datatype, $PDL_D, "get_datatype" ); # 7
is($b->at, 3000, "at" ); # 8
my $p = pdl [ 1, 2, 3, 4, 7, 9, 1, 1, 6, 2, 5];
my $q = zeroes 5;
minimum_n_ind $p, $q;
ok(tapprox($q, pdl(0, 6, 7, 1, 9)), "minimum_n_ind"); # 9
##############################
# check that our random functions work with Perl's srand
srand 5;
my $r1 = random 10;
srand 5;
my $r2 = random 10;
ok(tapprox($r1, $r2), "random and srand"); #10
srand 10;
$r1 = grandom 10;
srand 10;
$r2 = grandom 10;
ok(tapprox($r1, $r2), "grandom and srand"); #11
##############################
# Test that whichND works OK
my $r = xvals(10,10)+10*yvals(10,10);
$a = whichND( $r % 12 == 0 );
# Nontrivial case gives correct coordinates
ok(eval 'sum($a != pdl([0,0],[2,1],[4,2],[6,3],[8,4],[0,6],[2,7],[4,8],[6,9]))==0', "whichND"); #12
# Empty case gives matching Empty
$a = whichND( $r*0 );
ok($a->nelem==0, "whichND( 0*\$r ) gives an Empty PDL"); #13
ok($a->ndims==2, "whichND( 0*\$r ) has 2 dims"); #14
ok(($a->dim(0)==2 and $a->dim(1)==0), "whichND( 0*\$r ) is 2x0"); #15
# Scalar PDLs are treated as 1-PDLs
$a = whichND(pdl(5));
ok($a->nelem==1 && $a==0, "whichND"); #16
# Scalar empty case returns a 1-D vector of size 0
$a = whichND(pdl(0));
ok($a->nelem==0, "whichND of 0 scalar is empty"); #17
ok($a->ndims==1, "whichND of 0 scalar has 1 dim"); #18
ok($a->dim(0)==0, "whichND of 0 scalar: return 0 dim size is 0"); #19
# Empty case returns Empty
$b = whichND( which(pdl(0)) );
ok($b->nelem==0, "whichND of Empty mask"); #20
# Nontrivial empty mask case returns matching Empty -- whichND(Empty[2x0x2]) should return Empty[3x0]
$b = whichND(zeroes(2,0,2));
ok(($b->ndims==2 and $b->dim(0)==3 and $b->dim(1)==0), "whichND(Empty[2x0x2]) returns Empty[3x0]"); # 21
##############################
# Simple test case for interpND
my $index;
my $z;
$a = xvals(10,10)+yvals(10,10)*10;
$index = cat(3+xvals(5,5)*0.25,7+yvals(5,5)*0.25)->reorder(2,0,1);
$z = 73+xvals(5,5)*0.25+2.5*yvals(5,5);
eval '$b = $a->interpND($index);';
ok(!$@); #16
ok(sum($b != $z) == 0, "interpND"); #17
##############################
# Test glue
$a = xvals(2,2,2);
$b = yvals(2,2,2);
$c = zvals(2,2,2);
our $d;
eval '$d = $a->glue(1,$b,$c);';
ok(!$@); #18
ok(zcheck($d - pdl([[0,1],[0,1],[0,0],[1,1],[0,0],[0,0]],
[[0,1],[0,1],[0,0],[1,1],[1,1],[1,1]])), "glue"); #19
##############################
# test new empty piddle handling
$a = which ones(4) > 2;
$b = $a->long;
$c = $a->double;
ok(isempty $a, "isempty"); #20
ok($b->avg == 0, "avg of Empty"); #21
ok(! any isfinite $c->average, "isfinite of Empty"); #22
##############################
# Test uniqvec
$a = pdl([[0,1],[2,2],[0,1]]);
$b = $a->uniqvec;
eval '$c = all($b==pdl([[0,1],[2,2]]))';
ok(!$@ && $c && $b->ndims==2, "uniqvec"); #23
$a = pdl([[0,1]])->uniqvec;
eval '$c = all($a==pdl([[0,1]]))';
ok(!$@ && $c && $a->ndims==2, "uniqvec"); #24
$a = pdl([[0,1,2]]); $a = $a->glue(1,$a,$a);
$b = $a->uniqvec;
eval '$c = all($b==pdl([0,1,2]))';
ok(!$@ && $c && $b->ndims==2, "uniqvec"); #25
##############################
# Test bad handling in selector
SKIP: {
skip "Bad handling not available", 3 unless $PDL::Bad::Status;
$b = xvals(3);
ok(tapprox($b->which,PDL->pdl(1,2)), "which"); #26
setbadat $b, 1;
ok(tapprox($b->which,PDL->pdl([2])), "which w BAD"); #27
setbadat $b, 0;
setbadat $b, 2;
is($b->which->nelem,0, "which nelem w BAD"); #28
}
############################
# Test intersect & setops
my $x = sequence(10);
$a = which(($x % 2) == 0);
$b = which(($x % 3) == 0);
$c = setops($a, 'AND', $b);
ok(tapprox($c, pdl([0, 6])), "setops AND"); #29
$c = setops($a,'OR',$b);
ok(tapprox($c, pdl([0,2,3,4,6,8,9])), "setops OR"); #30
$c = setops($a,'XOR',$b);
ok(tapprox($c, pdl([2,3,4,8,9])), "setops XOR"); #31
##############################
# Test uniqind
$a = pdl([0,1,2,2,0,1]);
$b = $a->uniqind;
eval '$c = all($b==pdl([0,1,3]))';
ok(!$@ && $c && $b->ndims==1, "uniqind"); #32
$b = pdl(1,1,1,1,1)->uniqind; # SF bug 3076570
ok(! $b->isempty); #33
eval '$c = all($b==pdl([0]))';
ok(!$@ && $c && $b->ndims==1, "uniqind, SF bug 3076570"); #34
##############################
# Test whereND
SKIP: {
skip "have no whereND", 8 unless defined(&PDL::whereND);
$a = sequence(4,3,2);
$b = pdl(0,1,1,0);
$c = whereND($a,$b);
ok(all(pdl($c->dims)==pdl(2,3,2))) and #35
ok(all($c==pdl q[ [ [ 1 2] [ 5 6] [ 9 10] ]
[ [13 14] [17 18] [21 22] ] ]),
"whereND [4]"); #36
$b = pdl q[ 0 0 1 1 ; 0 1 0 0 ; 1 0 0 0 ];
$c = whereND($a,$b);
ok(all(pdl($c->dims)==pdl(4,2))) and #37
ok(all($c==pdl q[ 2 3 5 8 ; 14 15 17 20 ]),
"whereND [4,3]"); #38
$b = (random($a)<0.3);
$c = whereND($a,$b);
ok(all($c==where($a,$b)), "whereND vs where"); #39
# sf.net bug #3415115, whereND fails to handle all zero mask case
$b = zeros(4);
$c = whereND($a,$b);
ok($c->isempty, 'whereND of all-zeros mask'); #40
# Make sure whereND functions as an lvalue:
$a = sequence(4,3);
$b = pdl(0, 1, 1, 1);
eval q{
$a->whereND($b) *= -1;
};
is($@, '', 'using whereND in lvalue context does not croak');
#41
ok(all($a->slice("1:-1") < 0), 'whereND in lvalue context works');
#42
}