GetNptrs

The GetNptrs method retrieves the global node numbers present in the mesh. It can return either all node numbers or those belonging to a specific mesh ID.

Interface

INTERFACE
  MODULE FUNCTION GetNptrs1(obj) RESULT(ans)
    CLASS(AbstractMesh_), INTENT(IN) :: obj
    INTEGER(I4B) :: ans(obj%tNodes)
  END FUNCTION GetNptrs1
END INTERFACE

INTERFACE
  MODULE FUNCTION GetNptrs2(obj, meshid) RESULT(ans)
    CLASS(AbstractMesh_), INTENT(IN) :: obj
    INTEGER(I4B), INTENT(IN) :: meshid
    INTEGER(I4B), ALLOCATABLE :: ans(:)
  END FUNCTION GetNptrs2
END INTERFACE

Syntax

! Get all node numbers in the mesh
nodeNumbers = mesh%GetNptrs()

! Get node numbers for a specific mesh ID
nodeNumbers = mesh%GetNptrs(meshid)

Parameters

Parameter	Type	Intent	Description
obj	CLASS(AbstractMesh_)	IN	The mesh object
meshid	INTEGER(I4B)	IN	Mesh ID to filter nodes by

Return Value

Version	Type	Description
Version 1	INTEGER(I4B)(obj%tNodes)	Array of all global node numbers in the mesh
Version 2	INTEGER(I4B), ALLOCATABLE(:)	Array of global node numbers for the specified mesh ID

Description

GetNptrs returns an array of global node numbers present in the mesh. The method has two versions:

1. Return all node numbers in the mesh
2. Return only node numbers that belong to a specific mesh ID

This information is essential for operations that need to iterate over or reference specific nodes in the mesh.

Example Usage

TYPE(Mesh_) :: mesh
INTEGER(I4B) :: allNodes(mesh%GetTotalNodes())
INTEGER(I4B), ALLOCATABLE :: subdomainNodes(:)

! Initialize mesh...

! Get all node numbers
allNodes = mesh%GetNptrs()

! Get node numbers for a specific subdomain
subdomainNodes = mesh%GetNptrs(meshid=2)

PRINT *, "Total nodes:", SIZE(allNodes)
PRINT *, "Subdomain nodes:", SIZE(subdomainNodes)