Graphs / Plots – Geoscience Archive
Graphing, stereonet and plotting software from Geologynet.com
GEOrient
Stereonet and rose diagram plotting program. Free for students and teachers. Registration required for other users.
? Live
Web Links
Digitizer (Engauge)
PC Digitizer — digitize scanned images, graphs, maps etc. Open-source and actively maintained on GitHub.
Ggtern
Ternary Graphs using the R and Ggplot2 graphics/statistics packages. Extends ggplot2 for ternary diagram creation — widely used in geology for compositional data (e.g. feldspar, QFL plots). Latest release: v4.0.0 (November 2025).
? Updated — ggtern.com domain is down. Package is active on CRAN (v4.0.0, Nov 2025). Links updated to CRAN and GitHub.
CRAN Package Page
GitHub
SG2PS
Structural Geology to PostScript Converter — displays structural data on stereonets and rose diagrams. Free and open-source. Supports eight paleostress inversion methodologies, K-means clustering, bedding correction and borehole trajectory correction.
? Note — sg2ps.eu timed out in automated checks but is confirmed live via web search. GitHub repository provided as reliable backup.
Web Links
GitHub