Circos > Documentation > Tutorials > Ticks And Labels > Rings
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Circos at the EMBO NGS workshop in Tunis, Sept 15–25.

Use the latest version of Circos and read Circos best practices—these list recent important changes and identify sources of common problems.
If you are having trouble, post your issue to the Circos Google Group and include all files and detailed error logs. Please do not email me directly unless it is urgent—you are much more likely to receive a timely reply from the group.
Don't know what question to ask? Read Points of View: Visualizing Biological Data by Bang Wong, myself and invited authors from the Points of View series.

4 — Tick Marks, Grids and Labels

9. Tick Rings

circos.conf


<<include colors_fonts_patterns.conf>>

<<include ideogram.conf>>
<<include ticks.conf>>

<image>
<<include etc/image.conf>>
</image>

karyotype   = data/karyotype/karyotype.human.txt

chromosomes_units           = 1000000
#chromosomes                 = hs1[a]:0-75;hs1[b]:100-150;hs1[c]:200-)
chromosomes = hs1
chromosomes_display_default = no

<<include etc/housekeeping.conf>>


bands.conf

show_bands            = no
fill_bands            = yes
band_stroke_thickness = 2
band_stroke_color     = white
band_transparency     = 0


ideogram.conf


<ideogram>

<spacing>
default = 0.01r
break   = 2u
</spacing>

<<include ideogram.position.conf>>
<<include ideogram.label.conf>>
<<include bands.conf>>

</ideogram>



ideogram.label.conf

show_label     = yes
label_font     = default
label_radius   = (dims(ideogram,radius_inner) + dims(ideogram,radius_outer))/2
label_center   = yes
label_size     = 72
label_with_tag = yes
label_parallel = yes
label_case     = upper


ideogram.position.conf

radius           = 0.90r
thickness        = 100p
fill             = no
fill_color       = black
stroke_thickness = 2
stroke_color     = black


ticks.conf


show_ticks          = yes
show_tick_labels    = yes

<ticks>
label_separation = 5p
radius         = dims(ideogram,radius_outer)
multiplier     = 1/1u
color          = black
thickness      = 4p
show_label     = yes
label_offset   = 5p
format         = %d
size = 20p

<tick>
spacing        = 1u
radius         = dims(ideogram,radius_outer)
label_size     = 18p
format         = %d
color          = purple
</tick>

<tick>
spacing        = 2.5u
radius         = 0.8r
label_size     = 36p
format         = %.1f
color          = green
</tick>

<tick>
spacing        = 5u
radius         = dims(ideogram,radius_outer)
radius         = 0.8r
radius         = 0.4r
label_size     = 36p
</tick>

<tick>
spacing        = 10u
radius         = dims(ideogram,radius_outer)
radius         = 0.8r
radius         = 0.4r
radius         = 0.25r
show           = yes
label_size     = 36p
color          = red
</tick>

<tick>
spacing        = 50u
radius         = dims(ideogram,radius_outer)
radius         = 0.8r
radius         = 0.4r
radius         = 0.25r
radius         = 0.1r
label_size     = 36p
color          = blue
</tick>

</ticks>