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GeoStereonet

Plugin ID: 5571

Industry-grade interactive stereonet plotter for structural geology. Plots planes and lines on Schmidt/Wulff nets with Kamb density contouring, eigenvector analysis, Fisher statistics, rose diagrams, fold axis detection, dip-direction conversion, and PNG/SVG/PDF export.

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GeoStereonet v1.0 is a professional structural geology analysis plugin for QGIS.

PROJECTIONS
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• Equal-Area (Schmidt) lower hemisphere
• Equal-Angle (Wulff) lower hemisphere

PLOT TYPES
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• Planes as great circles + poles
• Linear elements (trend/plunge) as points
• Kamb density contours — exponential / linear / raw kernels
(Vollmer 1995), filled or line, sigma-adjustable
• Eigenvector overlay (S1 / S2 / S3 principal axes)
• Fisher mean vector + alpha-95 confidence cone
• Auto-detected orientation "sets" via spherical k-means
(Dips-style set-window analysis)
• Rose diagram with automatic dominant-direction interpretation

STRUCTURAL ANALYSIS
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• Eigenvalue tensor (S1, S2, S3 + Woodcock K and C)
• Fisher statistics (kappa, R-bar, alpha95, mean vector)
• Best-fit girdle / fold axis (pi-diagram)
• Mean plane determination
• Two-plane intersection (beta-axis)
• Angular distance between any two linear features
• Dip-direction/dip to RHR strike/dip auto-conversion

DATA SOURCES
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• QGIS vector layers with live selection sync
• CSV / TSV files with auto-delimiter detection

EXPORT
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• PNG (300 dpi), SVG (vector), PDF via Matplotlib

Version QGIS >= QGIS <= Date
1.1.0 - 3.16.0 3.99.0 7 mxhyam 2026-06-30T08:09:55.976060+00:00