Circos > Documentation > Tutorials > Links > Ribbons
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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.

5 — Links and Relationships

9. Ribbons

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]:0-0.8;hs1[b]:16.6-17.2;hs1[c]:141.5-148;hs1[d]:220.6-222.4;hs2[e]:90.8-95.2;hs2[f]:132.3-132.8;hs2[g]:242.5-)
chromosomes_breaks          = -hs1:142.3-143.9;-hs1:144.2-144.7;-hs1:145-146;-hs1:220.8-222;-hs2:91.8-94.6
chromosomes_display_default = no

#chromosomes_radius = hs2:0.8r;a:0.9r;b:1.0r

<links>

radius = 0.99r
crest  = 1
ribbon           = yes
flat             = yes
stroke_color     = vdgrey
stroke_thickness = 2
color            = grey_a3

bezier_radius        = 0r
bezier_radius_purity = 0.5

<link>

file       = data/5/segdup.txt

<rules>

flow       = continue

<rule>
condition  = var(intrachr) && abs(var(pos1)-var(pos2)) < 10Mb
show       = no
</rule>

<rule>
condition  = max(var(size1),var(size2)) < 10kb
show       = no
</rule>

<rule>
condition  = 1
z          = eval(int(max(var(size1),var(size2))/5000))
</rule>

<rule>
condition    = var(intrachr) 
condition    = (from(hs1) && var(start1) < 1Mb) || (to(hs1) && var(start2) < 1Mb)
color        = orange
stroke_color = dorange
</rule>

<rule>
condition    = var(intrachr)
condition    = (from(hs1) && var(start1) > 16Mb && var(start1) < 17Mb) || (to(hs1) && var(start2) > 16Mb && var(start2) < 17Mb)
color        = lblue
stroke_color = dblue
</rule>

</rules>

</link>

</links>

<<include etc/housekeeping.conf>>
data_out_of_range* = trim

bands.conf

show_bands            = yes
fill_bands            = yes
band_stroke_thickness = 2
band_stroke_color     = white
band_transparency     = 0

ideogram.conf


<ideogram>

<spacing>
default = 0.02r
break   = 0.25r
</spacing>

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

radius*       = 0.875r
label_radius* = dims(ideogram,radius) + 0.125r

</ideogram>

ideogram.label.conf

show_label       = yes
label_font       = default
label_radius     = dims(ideogram,radius) + 0.075r
label_with_tag   = yes
label_size       = 36
label_parallel   = yes
label_case       = lower
label_format     = eval(sprintf("chr%s",var(label)))

ideogram.position.conf

radius           = 0.90r
thickness        = 100p
fill             = yes
fill_color       = black
stroke_thickness = 2
stroke_color     = black

ticks.conf


show_ticks          = yes
show_tick_labels    = yes

<ticks>

radius           = dims(ideogram,radius_outer)
orientation      = out
label_multiplier = 1e-6
color            = black
size             = 20p
thickness        = 3p
label_offset     = 5p

<tick>
spacing        = 0.01u
show_label     = no
</tick>

<tick>
spacing        = 0.05u
show_label     = yes
label_size     = 16p
format         = %.2f
</tick>

<tick>
spacing        = 0.2u
show_label     = yes
label_size     = 24p
format         = %.2f
</tick>

</ticks>