OpenStereo - Carlos H. Grohmann

Transcrição

OpenStereo: open source, cross-platform software for
structural geology analysis
Carlos Henrique Grohmann & Ginaldo A.C. Campanha
[email protected]
Institute of Geosciences, University of São Paulo, Brazil
AGU 2010 Fall Meeting, San Francisco
Grohmann & Campanha (IGc-USP)
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Why yet another ’stereonet’ software?
There are several options available for structural geology analysis
Free download
Stereonet, StereoNett (Stereo32), GeoOrient, T-Tecto, Orient...
Comercial licenses
Dips, RockWorks
Basic tools
Plotting poles, great circles, rose diagrams, rotating data
More specific tasks
Paleostress, Rock slope stability
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Why yet another ’stereonet’ software?
Lots of options, lots of differences
Data format for input
Text files, spreadsheets
Graphical User Interface
From very simple to professional
Graphics exporting
Metafiles (windows only), bitmaps, print screen
Operating Systems
Most are for Windows, some are for Mac, but none is for *nix
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Oh, that’s why
Our goal was to create a software that could address these problems
Cross platform (run in the same way on Windows, Mac, *nix)
Clean interface
Simple data input (text files)
Good set of tools
Free (as defined by the Free Software Foundation)
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Tell me more
OpenStereo is
Free and Open Source Software (FOSS)
Licensed under the General Public License (GPL) v.3.0 or above
Written in Python
Widely used programming language, easy to learn
Uses numpy and matplotlib
Good tools for numeric analysis and graphics plotting/exporting
GUI is written in wxPython
Consistent look-and-feel regardless the OS
To run it you need
Python 2.6, numpy, matplotlib 1.0, wxPython 2.8
We recommend the Enthought Python Distribution or PythonXY
(Windows or Mac)
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What about data input?
Simple ASCII files
Values of Dip Direction and Dip/Plunge separated by spaces, tabs or
commas
Lines starting with a hash (#) are ignored
147
113
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# 117
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64
50
44
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50
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Main interface / Stereonet tab
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Rose Diagram tab
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Statistics tab
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Histogram tab
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Open file by type: Planar, Linear, Small Circle
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Grid / Schmidt projection
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Grid / Wulff projection
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Right-click: Properties / Delete item
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Display Options - Poles, G.Circles, Eigenvectors
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Display Options - Contours
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Display Options - Color Chooser Dialog
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Plotting - Poles + Girdle
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Plotting - Poles + Eigenvectors
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Plotting - Great Circles
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Plotting - Contours
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Plotting - Contours
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Plotting - Small Circles
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Rose Diagram - Full Rose
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Rose Diagram - Half Rose
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Rose Diagram - Weighting
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Statistics 1 + Flinn Plot
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Statistics 2 + Flinn Plot
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Statistics + Vollmer Plot
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Histogram - Strike
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Histogram - Dip
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Tools - Merge Data
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Tools - Merge Data
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Save Plot - PNG, EPS, PDF (vector)
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Where can I get it?
http://www.igc.usp.br/openstereo
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OpenStereo - Carlos H. Grohmann

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