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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" Bio::Graphics::Glyph::ternary_plot \- Draw ternary plot data .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #!/usr/bin/perl \& \& use strict; \& use warnings; \& \& use Bio::Graphics; \& use Bio::Graphics::Feature; \& \& my $segment = Bio::Graphics::Feature\->new(\-start=>1,\-end=>700); \& my $snp1 = Bio::Graphics::Feature\->new(\-start => 500, \& \-end => 501, \& \-name => \*(Aqrs000001\*(Aq, \& \-attributes=> {triples => [ \& [0.01, 0.81, 0.18, \*(Aqred\*(Aq, \*(AqCEPH\*(Aq], \& [0.25, 0.25, 0.50, \*(Aqblue\*(Aq, \*(AqJPT+CHB\*(Aq], \& [0.81, 0.01, 0.18, \*(Aqgreen\*(Aq,\*(AqYRI\*(Aq], \& ] \& } \& ); \& my $snp2 = Bio::Graphics::Feature\->new(\-start => 300, \& \-end => 301, \& \-name => \*(Aqrs12345\*(Aq, \& \-attributes=> {triples => [ \& [0.04, 0.64, 0.32, \*(Aqred\*(Aq, \*(AqControls\*(Aq], \& [0.16, 0.36, 0.48, \*(Aqblue\*(Aq, \*(AqCases\*(Aq], \& ] \& } \& ); \& \& my $panel = Bio::Graphics::Panel\->new(\-segment=>$segment,\-width=>800); \& \& $panel\->add_track($segment,\-glyph=>\*(Aqarrow\*(Aq,\-double=>1,\-tick=>2); \& $panel\->add_track([$snp1,$snp2], \& \-glyph => \*(Aqternary_plot\*(Aq, \& \-height => 80, \& \-fgcolor => \*(Aqlightgrey\*(Aq, \& \-vertices => [\*(AqAA\*(Aq,\*(AqGG\*(Aq,\*(AqAG\*(Aq], \& \-label => 1, \& ); \& \& print $panel\->png; .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" This glyph draws a light gray equilateral triangle with its base centered on the feature. The top of the equilateral triangle is equal to the specified height. To look good, please choose a height of >= 15. .PP Inside, the glyph will plot one or more data points using ternary plot conventions (see http://en.wikipedia.org/wiki/Ternary_plot). The data consists of a series of (A,B,C) triplets chosen such that the range of each component is [0.0,1.0] and A + B + C = 1.0. The left, right and apex of the triangle represent the proportions of A, B and C respectively. As a component approaches 1.0, it gets closer to its corresponding vertex. .PP The data can be represented as one or more feature tags called \*(L"triples\*(R" each in the format: .PP .Vb 1 \& A1,B1,C1,,