The FastRBF™ algorithm employs interpolation functions to estimate values from known data. From these estimated values, geological surfaces are constructed as part of the model-building process.
With the Interpolants folder, you can create interpolants and change their parameters. There are four different types of interpolant you can work with in the Interpolants folder:
- A numeric interpolant describes a physical quantity that varies continuously in space.
A numeric interpolant can be used to model, for example, grade distribution, with isosurface values set to represent both minimum concentrations of interest and regions of high value.See Creating a Numeric Interpolant and Editing a Numeric Interpolant.
- A multi-domained interpolant is a numeric interpolant that has a number of individual sub-interpolants that are bounded by the fault blocks or output volumes of a selected geological model. Changes to all sub-interpolants can be made by editing the parent interpolant, while sub-interpolants can be edited to account for local influences on the values used, the trend and interpolation parameters. See Multi-domained Interpolants.
- An indicator interpolant calculates the likelihood that values will fall above and below a specific threshold. An indicator interpolant can be used to produce a volume inside which further modelling is carried out. For example, you can create an indicator interpolant for grade values above a certain threshold, and then use the inside volume as a lateral extent for another model. See Creating an Indicator Interpolant and Editing an Indicator Interpolant.
- A distance function calculates the distance to a set of points. As with an indicator interpolant, a distance function is useful for restricting processing to a specific region. To do this, create a distance function, select the objects to use, then add at least one buffer. You can then use one of the distance function’s isosurfaces as a lateral extent for another model. See Distance Functions.
Values that can be interpolated include downhole numeric data, composited drillhole data and points data.
This section describes creating these different types of interpolants in the Interpolants folder. See Interpolant Functions for a general introduction to interpolation.