Harvard University
Structural Geology
and Tectonics

Using printed maps and cross-section with gOcad

Introduction

The vast majority of large scale geologic and structural information is available in form of printed maps and cross-sections. Mining these data involves converting them to a digital format and assigning them the proper spatial context. This process should preserve all geometric information as well as all annotation information which is often equally valuable. We address these problems by providing tools for properly registering printed maps and cross-sections within the gOcad modelling environment. Using these tools which are implemented as wizards it becomes straightforward to integrate a scanned cross-section or map into a 3d model. This makes all of the gained information directly accessible in their original spatial context.

Screenshots

choosing a coordinate input method(click for full image, 8kb)
First screen of registration wizard. Specify the imported voxet and type of coordinate input.

numerical coordinate input(click for full image, 12kb)
It is possible to numerically specify coordinates.

specifying vertical and horizontal scales(click for full image, 9kb)
In addition to a horizontal scale, a vertical scale can be specified.

coordinates by mouse(click for full image, 13kb)
In addition to the numerical entry of coordinates, it also possible to digitize an existing map.

help screen(click for full image, 15kb)
A help screen.

Download

I prepared an archive which includes the wizards and example maps and sections. The wizard probably runs only on gocad 1.5.X under unix because of issues with tcl mode and cli syntax.

Download (free for academic use),

Comments

If you like this package and use it for your work, please contact the author.

Enjoy,

A. Plesch


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5.14.01