Model Extents Parameters

This dialog sets up the extents of the model. The Current Models section displays the imported models. The current model is the model being edited. The regional model is a model used to apply a regional correction to field calculations.

The Dataset Information section associates connected raster datasets with the either DTM, magnetic data, gravity data or gravity regional data. If you are modelling actual data, this module will insist on DTM data. If nothing else, dtm data can be obtained from the SRTM archives.

The Model Extent Properties section sets up the model extents - by default from an associated DTM. Of importance are the X, Y and Z cell sizes. This determines the number of rows, columns and layers in the model. As a rule of thumb, models bigger than 100x100x100 may be slow, although this will depend on the hardware available.

Current Model

This only applies if you are importing a 3D model. It is the current model which you are working on.

Dataset Information

This is used to define the data connected to the modelling module. The data is either connected manually or will be embedded withing a 3D model file.

Model Extent Properties

The model extents control the area size and depth of your model, as well as its resolution. Typically one of your datasets are used to fill in most of the fields automatically. Because the DTM is compulsory to the modelling, this is normally the default choice.

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