Geometry_set

Contents

Data Structure: Geometry_set
Description	A set of geometry entities
Usage	Geometry_set NUM=ival where ival is the data structure number

Description

Overview

The Geometry_set data structures can be used to define a group of geometry entities; e.g. the side(s) of a model. Geometry sets may then be used to simplify the assignment of data to groups of entities; e.g. constraints.

Name Name of the geometry set

Usage

Name

Character Name

Description

Name of the geometry set (maximum of 32 characters).

Description Description of geometry set

Usage

Description

Character Name

Description

Description of the geometry set (maximum of 32 characters).

Set_type Type of geometry sets

Usage

Set_type

Character Name

Description

The type of geometry set is optional, but specific set types comprise:

• "Group" - Describing a discretised region forming a single element group

• "Fault" - Describing a complete fault geometry

• "Fault_surface" - Defining a single fault surface

• "Surface_horizon" - Defining the top horizon for a stratigraphy unit

• "Basal_horizon" - Defining the basal horizon for the model

• "Boundary" - Defining a boundary for the model

• "Nodal" - A geometry set composed of nodes without geometry entities

• "r2f_conversion" - Geometry entities defined by this set are retained throughout restoration to forward conversion

Volumes List of volumes

Usage

Volumes		IDM=ival
Integer Values
where	ival	Number of volumes

Description

List of volumes in geometry set.

Surfaces List of surfaces

Usage

Surfaces		IDM=ival
Integer Values
where	ival	Number of surfaces

Description

List of surfaces in geometry set.

Lines List of lines

Usage

Lines		IDM=ival
Integer Values
where	ival	Number of lines

Description

List of lines in geometry set.

Points List of points

Usage

Points		IDM=ival
Integer Values
where	ival	Number of vertex

Description

List of points in geometry set.

Nodes List of nodes

Usage

Nodes		IDM=ival
Integer Values
where	ival	Number of vertex

Description

List of nodes in geometry set.

Contact_surfaces List of contact surfaces (3D)

Usage

Contact_surfaces		IDM=ival
Integer Values
where	ival	Number of contact surfaces

Description

List of contact surfaces in geometry set (3D). This is only required if the surfaces required to define contact are different from the list of Surfaces defined in the set. For example, the geometry set may define a fault surface, whereas the contact requires inclusion of either the top surface or the detachment hanging wall.

Contact_lines List of contact lines (2D)

Usage

Contact_lines		IDM=ival
Integer Values
where	ival	Number of contact lines

Description

List of contact lines in geometry set (2D). This is only required if the lines required to define contact are different from the list of Lines defined in the set. For example, the geometry set may define a fault surface, whereas the contact requires inclusion of either the top surface or the detachment hangingwall.