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GEOrient | GeoCalculator | GeoMapSymbol | GeoMapVector | Strain Calculator | GeoFryplots | Ghoshflow
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Structural Geology - Mapping/GIS Software

Descriptions and downloads small logo

Note: If you have any concerns about downloading programs from these sites please see the MacAfee site adviser information at: http://www.siteadvisor.com/sites/holcombe.net.au

Stereographic projections/Rose diagrams/Wind Roses/Geometrical & shear/strain calculations/Fryplots...

GEOrient -                       Download...                      Purchase...
Author: Rod Holcombe      [Requires licence for non-academic users*]

GEOrient (full description and download...) plots and analyses stereographic projections and rose diagrams of structural data copied and pasted from other applications or read from text files. Wind rose options include plotting mean wind data (wind speed/wind frequency/wind energy). [Limitations of unregistered version...]

GeoCalculator            Download...                     Purchase...
Author: Rod Holcombe 

GeoCalculator (full description and download...), based on the style of Windows Calculator, handles a large number of geological structural and geometrical calculations, conversions between various orientation conventions, and drillhole calculations for oriented, partially oriented, and unoriented core. [Limitations of unregistered version...]

Strain & Shear Calculator -    [Download ~5200 Kb (self-extracting zip)]
Author: Rod Holcombe           (Windows 9x/2000/NT/XP/Vista): [free]

Strain Calculator presents strain data and calculations graphically and numerically. Conversions of strain ratios to stretches at a given volume change can be plotted directly onto a logarithmic strain plot (see screen shot ). Shear zone parameters (ellipticity, deformed and undeformed orientations, etc.) for any shear strain value or general shear vorticity number are calculated and shown graphically (see screen shot ). These tools have been developed principally as a teaching aid, and, in particular, I find the shear zone graphics a very useful way to demonstrate the development of shape fabrics ( further information ). [Installation instructions]

GeoFryplots -                   [Download ~2400 Kb (self-extracting zip)]
Author: Rod Holcombe           (Windows 9x/2000/NT/XP/Vista): [free]

GeoFryPlots performs strain analyses using the Fry point-to-point method. Data can be either read in from an ascii file (as pairs of x,y coordinates) or can be digitised directly into a data window using the mouse. Bitmap images to be digitised can be loaded into the data window from file. Fry plots are displayed in a separate FryPlot window within which a best-fit strain ellipse to the plot can be constructed using the mouse. Data and plot windows can be printed or copied to the clipboard, and digitised data can be saved to file. - see bugfix history for most recent changes.

The following link downloads the zipped .exe file alone [50kb] for those who have installed a recent version of GEOrient, GeoCalculator, or GeoFryPlots and who don't wish to download all the installation files. Only do this if you have downloaded any of these programs and know how to overwrite the old .exe files] [Installation instructions]

GhoshFlow -                  [Download ~2800 Kb (self-extracting zip)]
Author: Rod Holcombe           (Windows 9x/2000/NT/XP/Vista): [free]

GhoshFlow models graphically the orientation distribution of rigid objects of variable aspect ratio rotated in plane strain general shear flow. It is based on the equations presented by Ghosh and Ramberg (1975) and Ghosh (1993). The model tracks the deformed orientation distributions that would arise from an initial uniform orientation distribution of objects with a uniform distribution of aspect ratios. The basic plots are frequency histograms of the orientation distribution of Long Axes, and plots of the Long Axis orientations versus Aspect Ratio. In addition, a series of plots illustrate the orientation distribution of porphyroblasts that have overgrown a fabric parallel to the shear/flattening plane and in which the old fabric is preserved as an internal foliation, Si. The most useful of these are plots of Long axis orientations plotted against the orientation of the Si foliation. These plots are very sensitive to changes in either shear strain or vorticity number (see screen shot ) (see abstract ). [Installation instructions]

Mapinfo Software:
These are mapbasic mbx files that can be run from within MapInfo. Currently they have been compiled within the Windows  environment under MapInfo v7 & MapInfo v5.5 and are not suitable for Mac or other MapInfo platforms.

GeoMapVector                  [Download ~35 Kb]
Author: Rod Holcombe           (Windows 9x/2000/NT/XP): [free]
                                                       [Download a version compiled under MapInfo 5.5]

GeoMapVector for MapInfo calculates the azimuth (trend, orientation) and/or the length of line or polyline objects in a MapInfo table. The procedure works on the current Selection of objects and either updates pre-existing trend and/or length columns or produces a new table with the added columns. Azimuths are calculated on the ellipsoid for Earth-based tables and in cartesian space for non-earth based tables. The program is useful for capturing the orientation of digitised line data such as map strike symbols or lineation arrows, and for analysis of digitised lineament or fracture data. See BugFix history for this version.
See the help file, GEOMAPVECTOR.HLP, for instructions for using GeoMapVector. GEOMAPVECTOR.HLP can be run directly from within windows or can be accessed from within the GeoMapVector Help menu].

GeoMapSymbol       [Download ~60KB]
Author: Rod Holcombe                                [runs under MapInfo 8.0 or better]
(Windows 9x/2000/NT/XP/Vista):  [free]

[Download an upgraded version of the GeoMapSymbol table containing 100+ symbols. This table replaces the one generated by GeoMapSymbol when it is first run.

If users have produced any User-defined symbols that they are willing to share with the world please send me a copy of their GeoMapSymbol tables and I will incorporate the symbols into this master set. The current download set includes additional symbols devised by Andrew Duncan.

GeoMapSymbol is a utility to plot geological structural symbols in a MapInfo mapper (see screen shot ). When initially run the program generates a new symbol table, GeoMapSymbol.Tab. Initially this Mapinfo table contains about 50 predefined structural symbols that can be modified, or added to as User-Defined symbols. See the help file, GEOMAPSYMBOL.HLP, for full instructions for using GeoMapSymbol. GEOMAPSYMBOL.HLP can be run directly from within windows or can be accessed from within the GeoMapSymbol Help menu]. - see the bugfix history for this version.  Note that Vista users may need to download a utility from Microsoft to read the Help files.

[Download self-extracting zip files of the previous version compiled under MapInfo 7]
[Download self-extracting zip files of the previous version compiled under MapInfo 5.5]
[see note below about free registration details for these earlier versions]
[Version 2 was previously released as GeoSymbol]

Registration for this software is now free .For the older versions compiled under Mapinfo v5.5 & 7 please use the following registration codes to make all the symbols available. Enter the codes exactly as written into the appropriate textboxes in the registration module:
User Name: Gratis_RJH
Serial No: 51002
Key Code: 5002-2051-7336-1966
[End Registration details]

PolyNodeExtractor                  [Download ~13 Kb]
Author: Rod Holcombe           (Windows 9x/2000/NT/XP): [free]
                        [runs under MapInfo 8.0 or better]

PolynodeExtractor is a MapInfo tool for extracting the X & Y coordinates and an optional Z value from the node locations of any point, line, polyline, or region object in an open Mapinfo table. Results are output to a text file selected by the user, using any of a number of common file data delimiters. The coordinates can be in the table's native projection or in a user selected projection. For line, polyline and polygon objects, the user can thin the selected nodes by setting a minimum buffer distance.
The tool will NOT work with Query tables, Seamless tables, Raster Images, Read-Only tables, and tables opened via ODBC. [No BugFix history yet for this version].
Download and unzip both the .mbx and .str files (and any other provided files) into any directory. Within MapInfo use Tool Manager (under the Tools menu) to point to the mbx file as a new Tool.

The file PolyNodeExtractor.str is a text resource file to provide International language functionality. The text lines in this file can be translated into any language but make sure to retain, without change, the numbers at the end of each line of text. Currently only the English version is supplied with this download (and a copy is also included as the file: PolyNodeExtractor.eng.txt). This file can be renamed to PolyNodeExtractor.str if the original becomes corrupted or changed.

GIS Excel Utility for Australian Map grid conversion:    
 AMG-Lat/Long conversions         [Download ~170KB]  
    Author:Chris Stephens            Version date: Aug. '95        [Free]

Microsoft Excel spreadsheet that converts Latitude/Longitudes on the Australian Geodetic datum to Australian Map Grid (AMG) coordinates (UTM-based), and vice versa.


*The unregistered packages can be used freely (notes) by academics (teachers and students) for teaching and non-commercial research purposes, but please acknowledge the author in any publication or figure arising from the use of these packages.
For commercial users the unregistered download version can be used for evaluation purposes only, and must be registered for continued commercial use. Academic users who wish to exceed the plot window restriction of GEOrient, or access the full File I/O capabilities and drillhole calculations of GeoCalculator must also purchase registration.
Although every effort is made to rectify bugs as they are recognised, the author cannot guarantee that these packages are without error, and assumes no responsibility for their use, or for interpretations based on their use.
Frequent field work commitments may occasionally delay my ability to handle email queries promptly

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Address all software correspondence to Rod Holcombe at: Note: I will attempt to answer all email promptly, but I am commonly absent doing field work. Please bear with me if that causes a delay

email for software enquiries:

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