Circos > Documentation > Tutorials > Ticks And Labels > Labels
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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

3. Tick Marks - Label Margins

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;hs2;hs3:0-100;hs4:100-150
chromosomes_scale  = hs1:0.5;hs2:1;hs3:4;hs4:8
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>
radius               = dims(ideogram,radius_outer)
multiplier           = 1e-6

label_offset = 5p
thickness = 3p
size      = 20p

# ticks must be separated by 2 pixels in order
# to be displayed
tick_separation      = 2p
# Density of labels is independently controlled.
# While all tick sets have labels, only labels
# no closer than 5 pixels to nearest label will be drawn
label_separation     = 5p

<tick>
spacing        = 0.5u
color          = red
show_label     = yes
label_size     = 14p
label_offset   = 0p
format         = %.1f
</tick>

<tick>
spacing        = 1u
color          = blue
show_label     = yes
label_size     = 16p
label_offset   = 0p
format         = %d
</tick>

<tick>
spacing        = 5u
color          = green
show_label     = yes
label_size     = 20p
label_offset   = 0p
format         = %d
</tick>

<tick>
spacing        = 10u
color          = black
show_label     = yes
label_size     = 24p
label_offset   = 5p
format         = %d
</tick>

</ticks>