X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=appendix-a6.git;a=blobdiff_plain;f=compute;h=bd9ed7c6ab9e0b01d9a89f4cdcff95eed7ec6c07;hp=4021eb7db6c56537ca59f7b69449a643bc4cc83f;hb=6f5838e665e31aa6d3e1216eb6e29884254b0f5a;hpb=fbc40601bc45c332b834d0c2d95f9cc57936eeb4

diff --git a/compute b/compute
index 4021eb7..bd9ed7c 100755
--- a/compute
+++ b/compute
@@ -203,7 +203,7 @@ foreach my $iv (@invotes_v) {
 	    my $vchr = $vs[$ix];
 	    if ($vchr eq '-') {
 		$vs[$ix] = 1000;
-	    } elsif ($vchr =~ m/[0-9a-z]/) {
+	    } elsif ($vchr =~ m/[0-9A-Z]/) {
 		$vs[$ix] = ord($vchr);
 	    } else {
 		die "bad vote char";
@@ -294,9 +294,9 @@ sub chremain () {
     return grep { !$ch[$_]{Dropped} } (0..$#ch);
 }
 
-foreach my $ia (chremain()) {
+foreach my $ia (0..$#ch) {
     $defeats->add_vertex($choices[$ia]);
-    foreach my $ib (chremain()) {
+    foreach my $ib (0..$#ch) {
 	my $vab = scalar @{ $vab[$ia][$ib] };
 	my $vba = scalar @{ $vab[$ib][$ia] };
 	next unless $vab > $vba;
@@ -304,6 +304,13 @@ foreach my $ia (chremain()) {
 	print "defeat: $choices[$ia] beats $choices[$ib]",
 	    " ($vab > $vba = +$diff)\n";
 	$defeats->add_edge($choices[$ia],$choices[$ib]);
+	my $label = "$diff($vab:$vba)";
+	if (@invotes_v < 10) {
+	    $label .= "\n". join ' ', @{ $vab[$ia][$ib] };
+	    $label .= "\n/". join ' ', @{ $vab[$ib][$ia] };
+	}
+	$defeats->set_edge_attribute($choices[$ia],$choices[$ib],
+				     label => $label);
     }
 }
 
@@ -326,14 +333,20 @@ sub weaker ($$) {
 
 our $showg = $defeats->deep_copy();
 
+foreach my $ix (0..$#ch) {
+    my $cho = $ch[$ix];
+    next unless $cho->{Dropped};
+    $defeats->delete_vertex($choices[$ix]);
+}
+
 our $schwartz;
 
-for (;;) {
+for (my $dropiter = 1; ; $dropiter++) {
     # loop from A6(5)
 
     print "defeats graph: $defeats\n";
 
-    print "\nTransitive closure A.6(5)\n";
+    print "\nTransitive closure A.6(5) (iteration $dropiter)\n";
 
     my $tdefeats = $defeats->transitive_closure();
 
@@ -389,6 +402,11 @@ for (;;) {
 	my ($ca,$cb) = @$weakest;
 	print "a weakest defeat is $ca > $cb\n";
 	$defeats->delete_edge($ca,$cb);
+	my $label = $showg->get_edge_attribute($ca,$cb,'label');
+	$label .= "\ndropped - weakest in iter.$dropiter";
+	$showg->set_edge_attribute($ca,$cb,'label',$label);
+	$showg->set_edge_attribute($ca,$cb,'style','dotted');
+	$showg->set_edge_attribute($ca,$cb,'graphviz',{constraint=>0});
     }
 
     print "\nDefeats within the Schwartz set, go round again\n";
@@ -397,10 +415,13 @@ for (;;) {
 print "no defeats within the Schwartz set\n";
 print "final schwartz set:\n\n";
 
+my $winxlabel;
 if ($schwartz->vertices() == 1) {
     print "WINNER IS:\n";
+    $winxlabel = "winner";
 } else {
     print "WINNER IS ONE OF (CASTING VOTE DECIDES):\n";
+    $winxlabel = "potential winner";
 }
 
 printf "    %-5s %s\n", $_, $choices{$_}{Desc}
@@ -409,10 +430,13 @@ printf "    %-5s %s\n", $_, $choices{$_}{Desc}
 if (defined $gfile) {
     foreach my $cho (values %choices) {
 	my $chn = $choices[$cho->{Index}];
-	my $label = "\\N\n$cho->{Desc}";
+	my $label = "$chn\n$cho->{Desc}";
 	if ($cho->{Dropped}) {
 	    $label .= "\nDropped: $cho->{Dropped}";
 	}
+	if ($schwartz->has_vertex($chn)) {
+	    $label .= "\n$winxlabel";
+	}
 	$showg->set_vertex_attribute($chn, 'label', $label);
     }