1: program  ex1f90
  2:  #include <petsc/finclude/petscdmlabel.h>
  3:   use petscdm
  4:   use petscdmlabel
  5:   implicit NONE

  7:   type(tDM)           :: dm, dmDist
  8:   character(len=2048) :: filename
  9:   integer,parameter   :: len=2048
 10:   PetscBool           :: interpolate = PETSC_FALSE
 11:   PetscBool           :: flg
 12:   PetscErrorCode      :: ierr
 13:   PetscInt            :: izero
 14:   izero = 0

 16:   call PetscInitialize(PETSC_NULL_CHARACTER,ierr)
 17:     if (ierr .ne. 0) then
 18:     print*,'Unable to initialize PETSc'
 19:     stop
 20:   endif
 21:   call PetscOptionsGetString(PETSC_NULL_OPTIONS,PETSC_NULL_CHARACTER,"-i",filename,flg,ierr);CHKERRA(ierr)
 22:   call PetscOptionsGetBool(PETSC_NULL_OPTIONS,PETSC_NULL_CHARACTER,"-interpolate",interpolate,flg,ierr);CHKERRA(ierr)

 24:   call DMPlexCreateFromFile(PETSC_COMM_WORLD,filename,interpolate,dm,ierr);CHKERRA(ierr)
 25:   call DMPlexDistribute(dm,izero,PETSC_NULL_SF,dmDist,ierr);CHKERRA(ierr)
 26:   if (dmDist /= PETSC_NULL_DM) then
 27:     call DMDestroy(dm,ierr);CHKERRA(ierr)
 28:     dm = dmDist
 29:   end if

 31:   call ViewLabels(dm,PETSC_VIEWER_STDOUT_WORLD,ierr);CHKERRA(ierr)
 32:   call DMDestroy(dm,ierr);CHKERRA(ierr)
 33:   call PetscFinalize(ierr)

 35: contains
 36:   subroutine ViewLabels(dm,viewer,ierr)
 37:     type(tDM)                        :: dm
 38:     type(tPetscViewer)               :: viewer
 39:     PetscErrorCode                   :: ierr

 41:     DMLabel                          :: label
 42:     type(tIS)                        :: labelIS
 43:     character(len=2048)              :: labelName,IObuffer
 44:     PetscInt                         :: numLabels,l

 46:     call DMGetNumLabels(dm, numLabels, ierr);
 47:     write(IObuffer,*) 'Number of labels: ', numLabels, '\n'
 48:     call PetscViewerASCIIPrintf(viewer, IObuffer, ierr);CHKERRQ(ierr)
 49:     do l = 0, numLabels-1
 50:       call DMGetLabelName(dm, l, labelName, ierr);CHKERRQ(ierr)
 51:       write(IObuffer,*) 'label ',l,' name: ',trim(labelName),'\n'
 52:       call PetscViewerASCIIPrintf(viewer, IObuffer, ierr);CHKERRQ(ierr)

 54:       call PetscViewerASCIIPrintf(viewer, "IS of values\n", ierr);CHKERRQ(ierr)
 55:       call DMGetLabel(dm, labelName, label, ierr);CHKERRQ(ierr)
 56:       call DMLabelGetValueIS(label, labelIS, ierr);CHKERRQ(ierr)
 57: !      call PetscViewerASCIIPushTab(viewer,ierr);CHKERRQ(ierr)
 58:       call ISView(labelIS, viewer, ierr);CHKERRQ(ierr)
 59: !      call PetscViewerASCIIPopTab(viewer,ierr);CHKERRQ(ierr)
 60:       call ISDestroy(labelIS, ierr);CHKERRQ(ierr)
 61:       call PetscViewerASCIIPrintf(viewer, "\n", ierr);CHKERRQ(ierr)
 62:     end do

 64:     call PetscViewerASCIIPrintf(viewer,"\n\nCell Set label IS\n",ierr);CHKERRQ(ierr)
 65:     call DMGetLabel(dm, "Cell Sets", label, ierr);CHKERRQ(ierr)
 66:     call DMLabelGetValueIS(label, labelIS, ierr);CHKERRQ(ierr)
 67:     call ISView(labelIS, viewer, ierr);CHKERRQ(ierr)
 68:     call ISDestroy(labelIS, ierr);CHKERRQ(ierr)
 69:   end subroutine viewLabels
 70: end program ex1F90

 72: !/*TEST
 73: !
 74: !  test:
 75: !    suffix: 0
 76: !    args: -i ${wPETSC_DIR}/share/petsc/datafiles/meshes/blockcylinder-50.exo -interpolate
 77: !    requires: exodusii
 78: !
 79: !TEST*/