"Any" properties in the IGI property model

Overview

IGI's geochemical software (Metis and p:IGI+) contains a comprehensive industry-relevant property model. This page explains the concept and use of "Any" properties and indicators within the IGI property model.

Usage: Throughout the system, particularly in the property selection dialogues

How to use in practice

With an extensive IGI property model, focused on recording analytical accuracy, the interpretative utility of the model is through the Any analysis group (.Any) and the Any Indicator [*] concepts.

.Any (Any property) - comparable property values from different analytical methods are collated into a unified property for display on graphs and use in other artefacts. In the spreadsheet, both the value and the source analysis group are shown in the cell, e.g. 2.0 (LECO) for TOC.Any.

Note: For molecular & gas properties the .Any concept only operates across a single property indicator at any one time.
[*] (Any indicator) - within a molecular or gas property, values from the differing property indicators are combined into a unified indicator for display on graphs and use in other artefacts. In the spreadsheet, both the value and the source indicator are shown in the cell, e.g. 0.79 [a]. This Any Indicator [*] concept is only available for ratio properties as these possess comparable units, avoiding conflicts across different indicators.

Where a sample has several values for a property, measured using different analytical methods, a pre-defined fallback preference [listed in Geochemical Help] is employed to determine which value will be used by the associated .Any property. The same is also true when using the Any indicator [*] for a molecular/gas ratio property which has data recorded for multiple property indicators.

Note: .Any and [*], can be combined into an Any property, Any Indicator (.Any[*]) concept for molecular and gas properties. The hierarchical preference system starts with a primary analysis group preference order, for which it cycles through each of the respective property indicators prior to moving to the next analysis group. Below is an example for the molecular ratio Pr/Ph (Pristane/Phytane):

A list of the pre-defined fallback orders for all .Any properties in the system are provided in the Geochemistry help available in both p:IGI+ and Metis Transform.

Video tutorials

None Available

Return to the Property Model User Guide page