solve_3set: Area-proportional 3-set circle layout (Wilkinson 2012-style...
In vennDiagramLab: Headless Venn Diagram Analysis and Rendering
solve_3set R Documentation
Area-proportional 3-set circle layout (Wilkinson 2012-style triangulation)
Description
Computes pairwise inter-center distances via bisection on the lens
intersection area, then places circle C via barycentric triangulation
against AB. Always sets 'is_approximate = TRUE' because perfect 3-circle
area-proportional fits don't always exist mathematically.
Usage
solve_3set(regions)
Arguments
regions
Named list keyed by 'as.character(bitmask)' (1..7) -> exclusive count.
Missing keys are treated as 0.
Details
Mirrors Python 'solve_3set' byte-for-byte (including the 'error = NaN'
deliberate sentinel - 3-set fit error is not measured in v0.1).
Value
A named list with elements 'circles' (length 3), 'error' (always NaN
in v0.1), 'is_approximate' (always TRUE).
Examples
solve_3set(list("1" = 100L, "2" = 80L, "3" = 30L,
"4" = 60L, "5" = 20L, "6" = 15L, "7" = 5L))
vennDiagramLab documentation built on May 19, 2026, 1:07 a.m.
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| solve_3set | R Documentation |
Area-proportional 3-set circle layout (Wilkinson 2012-style triangulation)
Description
Computes pairwise inter-center distances via bisection on the lens intersection area, then places circle C via barycentric triangulation against AB. Always sets 'is_approximate = TRUE' because perfect 3-circle area-proportional fits don't always exist mathematically.
Usage
solve_3set(regions)
Arguments
regions |
Named list keyed by 'as.character(bitmask)' (1..7) -> exclusive count. Missing keys are treated as 0. |
Details
Mirrors Python 'solve_3set' byte-for-byte (including the 'error = NaN' deliberate sentinel - 3-set fit error is not measured in v0.1).
Value
A named list with elements 'circles' (length 3), 'error' (always NaN in v0.1), 'is_approximate' (always TRUE).
Examples
solve_3set(list("1" = 100L, "2" = 80L, "3" = 30L,
"4" = 60L, "5" = 20L, "6" = 15L, "7" = 5L))
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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