VOXI Update 1

Release Notes

About this release
System requirements
Installing the software
New Capabilities

About this Release

This update adds features that assist in data validation and usability and includes some maintenance fixes as well.  This update can ONLY be applied on top of Oasis montaj  Please ensure you have Oasis montaj installed before applying this update.

System requirements

This VOXI update requires Oasis montaj, for additional requirements, see the full system requirements.

Installing the software

To install this update, you'll need to have Oasis montaj installed and then download the resource file from the link at the top of this page. Here's how:

  1. Download the file from the link provided in the email and save to a location on your computer.
  2. Unzip the zip file and save the resource update file (*.geosoft_resource_pack) to the same folder location.
  3. On the Help menu in Oasis montaj 8.1, click Updates, then click Apply Resource Update.
  4. In the Manual Resource Update dialog, click the browse button Browse button to locate and select the resource updates file (*.geosoft_resource_pack).

New Capabilities

VOXI Earth Modelling

Added further validation to VOXI

We've added new checks to insure that your data is valid before running an inversion. Where possible, your input is further validated to ensure it is within expected ranges.

If you accidentally specified incorrectly a potential parameter or data and caused the data to fall outside these ranges, a warning message will alert you. You will​ then have the opportunity to review your entries and make corrections before using the inversion service, saving time and cost in running an incorrect inversion

Default error set to an infinitesimal non-zero floor value

In VOXI, if the default error value is calculated to be zero, it is now automatically reset to be an infinitesimally small value close to zero.

This change was made to accommodate the following situation: when running a forward model, the sensor channel does not matter and you can pick any channel. If this channel contains a constant, then the error is set to zero and forces you to specify a value.

By nudging the error just a touch over zero, we avoid this issue and you can perform forward and inverse modelling using the default settings without having to enter any other information.

Improved the default fit error for gravity gradient inversions

The default fit error calculation that controls the outcome for Airborne Gravity Gradient (AGG) and Full Tensor Gradiometry (FTG) inversions was adjusted slightly to provide better results.


Enhancements and maintenance fixes

Maintenance Fixes
IS111978 In VOXI MVI models the projected and perpendicular components have been corrected to represent respectively the component of the magnetic vector along the geomagnetic field and the component normal to it .
IS145589 The VOXI Absolute/Relative default errors were set to the same value for all model types regardless of whether they started from a grid or a database. It is now set as a function of the data type being modelled.
IS135158 Computational Accuracy setting in VOXI now referred to as Computational Error Tolerance.
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