指定染色体标刻度
去掉某染色体的刻度
<tick>
chromosomes = -hs9
spacing = 0.5u
...
</tick>
只给指定染色体标上刻度
<tick>
chromosomes_display_default = no
chromosomes = hs9
spacing = 0.5u
...
</tick>
官网[here] (http://circos.ca/documentation/tutorials/scaling/global_scale/)