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Circos > Documentation > Tutorials > Scaling > Overlaping Zooms

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Circos at the EMBO NGS workshop in Tunis, Sept 15–25.

Configuration Quick Start Ideograms Highlights Ticks And Labels Links 2D Tracks Scaling Recipes Image Maps Utilities Reference

Global Scale Global Relative Scale Scale Regions Zooming Overlaping Zooms Scale Smoothing Combining Scales Data Example

Use the latest version of Circos and read Circos best practices—these list recent important changes and identify sources of common problems.
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7 — Axis Scaling

5. Overlapping Zoomed Regions

Lesson Images Configuration

When overlapping zoom regions are defined, the zoom level at an ideogram position is taken to be the highest (in absolute terms) zoom of any overlapping regions.

For example, if you define the following regions

100-200Mb - 2x
150-180Mb - 3x
160-170Mb - 5x

then the net effect will be as if you defined

100-150Mb - 2x
150-160Mb - 3x
160-170Mb - 5x
170-180Mb - 3x
180-200Mb - 2x

The zoom precedence is defined by the absolute zoom level, which is taken to be max(scale,1/scale) For example, a scale of 0.1 (absolute zoom = 1/0.1 = 10x) overrides any zoom setting with an absolute zoom level smaller than 10x.