Geoscience Australia

GOCAD Projector

This project contains a simple Java utility that can be used to reproject GOCAD objects between different map projections. It uses the GDAL library for reprojection.

It has good support for Atomic, TSurf, PLine, TSolid, and Well objects (anything that uses VRTX or PVRTX), as well as SGrid objects. It also has limited support for Voxet and GSurf objects, but only changes the coordinate system and not individual points (which would require resampling of the attached binary data).

Download

Compiled versions are available for download from the following links:

• Windows x86
• Windows x64

Usage

There are two different executable classes in the utility; a GUI version and a Console version.

The GUI version contains a user interface which simplifies interaction with the utility. Simply add the files you wish to reproject to the list, and click start. You can also reproject a directory of GOCAD files.

The Source SRS and Target SRS parameters accept any string supported by GDAL's OGRSpatialReference.SetFromUserInput() method, which includes EPSG PCS and GCSes (ie. EPSG:4326), PROJ.4 declarations, or the name of a .prf file containing well known text (WKT).

The console version can be used to reproject GOCAD objects as a batch process. The command line options are as follows:

Usage: console [options]
  Options:
    -h, -help        Print these command line usage instructions
                     Default: false
  * -i, -input       The input GOCAD object to reproject.
  * -o, -output      The output repojected GOCAD object.
    -f, -overwrite   Force overwriting the output file if it already exists.
                     Default: false
  * -s, -s_srs       The source spatial reference set. The coordinate systems
                     that can be passed are anything supported by the
                     OGRSpatialReference.SetFromUserInput() call, which includes
                     EPSG PCS and GCSes (ie. EPSG:4326), PROJ.4 declarations (as
                     above), or the name of a .prf file containing well known
                     text.
  * -t, -t_srs       The target spatial reference set. The coordinate systems
                     that can be passed are anything supported by the
                     OGRSpatialReference.SetFromUserInput() call, which includes
                     EPSG PCS and GCSes (ie. EPSG:4326), PROJ.4 declarations (as
                     above), or the name of a .prf file containing well known
                     text.

Supported platforms

Any architecture/operating system with compiled GDAL binaries and a JVM should be supported. However this repository only contains the Windows (x86 and x64) GDAL binaries.

License

This project is released under the Apache 2.0 license and is distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and limitations under the License.

Contact

For more information on this project, please email m3dv:at:ga.gov.au.