Gbrowse图谱可以分为三部分，overview，region，details，每一部分都可以显示0到多个的映描（track），对于trace的定义，可以分为以下几部分：
- track显示的内容，显示什么样的数据
- track显示为什么样子，具体的样式
- track有关的文字描述
- track有关的行为，比如冒泡提示，点击或者经过时的行为，启动的链接
更为复杂的主题包括：
- 显示样式、内容的动态话
- 多种来源、多种类型的数据组合
- 不同缩放比例，显示不同的样式
- 对于显示数据内容数目的限制
- track的层级分类，一个track下可以分为多个不同的下级track
- 密度图、频率图显示
- 不同用户的权限管理
图示
配置示例
- [Density:overview]在overview区域显示
- feature = density feature的类型，可以是多个，也可以使用来源进行限制
- glyph = xyplot Track显示的图形样式
- graph_type = boxes 下面都是选择xyplot后，设定的相应的参数
- max_score = 60
- min_score = 0
- scale = none
- bgcolor = red
- fgcolor = red
- height = 20
- label = 0 每一feature是否显示标题
- key = Density histograms /10k 该Track的标题
- [GC:region] 在Region取显示
- glyph = dna
- global feature = 1
- height = 40
- do_gc = 1
- gc_window = auto
- strand = both
- fgcolor = red
- axis_color = blue
- key = DNA/GC Content
- [Genes] 在details区显示
- feature = gene
- glyph = so_transcript
- bgcolor = yellow
- forwardcolor = yellow
- reversecolor = turquoise
- label = sub { my $f = shift;
- my $name = $f->display_name;
- my @aliases = $f->attributes('Alias');
- $name .= " (@aliases)" if @aliases;
- $name;
- }
- height = 6
- description = 0
- key = Named gene
- [mRNA]
- feature = exon
- glyph = transcript
- description = 1
- height = 10
- sixframe = 1
- label = sub {shift->name . " reading frame"}
- key = mRNA
- [CDS]
- feature = CDS
- glyph = transcript2
- height = 10
- connector = 1
- connector_color =black
- strand_arrow =1
- key = CDS
- [tRNAs]
- feature = tRNA
- glyph = generic
- bgcolor = lightgray
- fgcolor = black
- height = 4
- stranded = 1
- description = 1
- key = tRNAs
- [rRNA]
- feature = rRNA
- fgcolor = orange
- glyph = generic
- description = 1
- key = rRNAs
- [pseudogene]
- feature = pseudogene
- glyph = gene
- bgcolor = lightgray
- fgcolor = black
- height = 4
- key = pseudogene
- [pseudogenic region]
- feature = pseudogenic_region
- glyph = segments
- bgcolor = lightgray
- fgcolor = black
- height = 4
- key = pseudogenic region
- description = 0
- [mobile element]
- feature = mobile_element
- glyph = segments
- bgcolor = lightgray
- fgcolor = black
- height = 4
- description = 0
- key = mobile element
- [processed transcript]
- feature = processed_transcript
- glyph = generic
- bgcolor = lightgray
- fgcolor = black
- height = 4
- description = 0
- key = processed transcript
glyph支持的类型
glyph指定的类型，实际上画图调用的是 Bio::Graphics相应的方法，而具体画图可以设定的变量以及相应的意义，也可以通过查看 Bio::Graphics 模块的文档获得。支持的类型包括：
- Bio::Graphics::Glyph::Factory
- Bio::Graphics::Glyph::alignment
- Bio::Graphics::Glyph::anchored_arrow 锚
- Bio::Graphics::Glyph::arrow
- Bio::Graphics::Glyph::box
- Bio::Graphics::Glyph::broken_line
- Bio::Graphics::Glyph::cds
- Bio::Graphics::Glyph::christmas_arrow
- Bio::Graphics::Glyph::crossbox
- Bio::Graphics::Glyph::dashed_line 虚线
- Bio::Graphics::Glyph::diamond 菱形
- Bio::Graphics::Glyph::dna
- Bio::Graphics::Glyph::dot 点
- Bio::Graphics::Glyph::dumbbell 哑铃
- Bio::Graphics::Glyph::ellipse 椭圆
- Bio::Graphics::Glyph::ex
- Bio::Graphics::Glyph::extending_arrow
- Bio::Graphics::Glyph::flag 旗帜
- Bio::Graphics::Glyph::gene
- Bio::Graphics::Glyph::generic
- Bio::Graphics::Glyph::graded_segments 精细的
- Bio::Graphics::Glyph::group
- Bio::Graphics::Glyph::heterogeneous_segments 混杂的
- Bio::Graphics::Glyph::image
- Bio::Graphics::Glyph::lightning 闪电
- Bio::Graphics::Glyph::line
- Bio::Graphics::Glyph::merge_parts 合并
- Bio::Graphics::Glyph::merged_alignment
- Bio::Graphics::Glyph::minmax
- Bio::Graphics::Glyph::oval 椭圆
- Bio::Graphics::Glyph::pentagram 五角星
- Bio::Graphics::Glyph::pinsertion
- Bio::Graphics::Glyph::primers
- Bio::Graphics::Glyph::processed_transcript
- Bio::Graphics::Glyph::protein
- Bio::Graphics::Glyph::ragged_ends 凹凸不平的
- Bio::Graphics::Glyph::redgreen_box
- Bio::Graphics::Glyph::redgreen_segment
- Bio::Graphics::Glyph::repeating_shape
- Bio::Graphics::Glyph::rndrect
- Bio::Graphics::Glyph::ruler_arrow
- Bio::Graphics::Glyph::saw_teeth
- Bio::Graphics::Glyph::segmented_keyglyph
- Bio::Graphics::Glyph::segments
- Bio::Graphics::Glyph::so_transcript
- Bio::Graphics::Glyph::span
- Bio::Graphics::Glyph::splice_site
- Bio::Graphics::Glyph::stackedplot 堆积线
- Bio::Graphics::Glyph::ternary_plot 三重曲线
- Bio::Graphics::Glyph::text_in_box
- Bio::Graphics::Glyph::three_letters 三个字母
- Bio::Graphics::Glyph::tic_tac_toe
- Bio::Graphics::Glyph::toomany
- Bio::Graphics::Glyph::track
- Bio::Graphics::Glyph::transcript
- Bio::Graphics::Glyph::transcript2
- Bio::Graphics::Glyph::translation
- Bio::Graphics::Glyph::triangle 三角形
- Bio::Graphics::Glyph::two_bolts
- Bio::Graphics::Glyph::wave 波浪
- Bio::Graphics::Glyph::weighted_arrow
- Bio::Graphics::Glyph::whiskerplot 细微的曲线
- Bio::Graphics::Glyph::xyplot
图形的收集与展示
只有想不到的，没有做不到的，后面会收集与展示GBrowse丰富的track展示截图。
SNP展示
频率图
转录组数据展示
比较基因组
原文来自：http://boyun.sh.cn/bio/?p=1798