add nocalc option for debug svg output

diff --git a/lib/Text/Tradition/Collation.pm b/lib/Text/Tradition/Collation.pm
index 6357a6f..786e862 100644 (file)
--- a/lib/Text/Tradition/Collation.pm
+++ b/lib/Text/Tradition/Collation.pm
@@ -550,7 +550,7 @@ sub as_svg {
     throw( "Need GraphViz installed to output SVG" )
        unless File::Which::which( 'dot' );
     my $want_subgraph = exists $opts->{'from'} || exists $opts->{'to'};
-    $self->calculate_ranks() unless $self->_graphcalc_done;
+    $self->calculate_ranks() unless( $self->_graphcalc_done || $opts->{'nocalc'} );
     if( !$self->has_cached_svg || $opts->{'recalc'}    || $want_subgraph ) {        
                my @cmd = qw/dot -Tsvg/;
                my( $svg, $err );