[petsc-users] Binary VTK viewer

[Jed Brown]

On Thu, Mar 8, 2012 at 16:19, Max Rudolph <maxwellr at gmail.com> wrote:

> Is it expected behavior for field names not to be included in the .vts
> file produced using this viewer?


Did you use DMDASetFieldNames()?

$ mpiexec -n 2 ./ex50 -da_refine 4 -snes_monitor -snes_view_solution_vtk
foo.vts

now foo.vts contains

<?xml version="1.0"?>
<VTKFile type="StructuredGrid" version="0.1" byte_order="LittleEndian">
  <StructuredGrid WholeExtent="0 48 0 48 0 0">
    <Piece Extent="0 48 0 24 0 0">
      <Points>
        <DataArray type="Float64" Name="Position" NumberOfComponents="3"
format="appended" offset="0" />
      </Points>
      <PointData Scalars="ScalarPointData">
        <DataArray type="Float64" Name="x-velocity" NumberOfComponents="1"
format="appended" offset="29404" />
        <DataArray type="Float64" Name="y-velocity" NumberOfComponents="1"
format="appended" offset="39208" />
        <DataArray type="Float64" Name="Omega" NumberOfComponents="1"
format="appended" offset="49012" />
        <DataArray type="Float64" Name="temperature" NumberOfComponents="1"
format="appended" offset="58816" />
      </PointData>
    </Piece>
    <Piece Extent="0 48 25 48 0 0">
      <Points>
        <DataArray type="Float64" Name="Position" NumberOfComponents="3"
format="appended" offset="68620" />
      </Points>
      <PointData Scalars="ScalarPointData">
        <DataArray type="Float64" Name="x-velocity" NumberOfComponents="1"
format="appended" offset="96848" />
        <DataArray type="Float64" Name="y-velocity" NumberOfComponents="1"
format="appended" offset="106260" />
        <DataArray type="Float64" Name="Omega" NumberOfComponents="1"
format="appended" offset="115672" />
        <DataArray type="Float64" Name="temperature" NumberOfComponents="1"
format="appended" offset="125084" />
      </PointData>
    </Piece>
  </StructuredGrid>
  <AppendedData encoding="raw">



>
> Max
>
> On Thu, Mar 8, 2012 at 11:21 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote:
>
>> On Thu, Mar 8, 2012 at 13:10, Max Rudolph <maxwellr at gmail.com> wrote:
>>
>>> I get an implicit declaration warning when compiling with a call to
>>> DMDAVTKWriteAll:
>>>
>>> io.c:209: warning: implicit declaration of function 'DMDAVTKWriteAll'
>>>
>>> Should the prototype be in petscdmda.h ? I do not see it there. Code
>>> still compiles successfully.
>>>
>>
>> That is a developer-level function that you should not be calling, it's
>> declared in private/daimpl.h. I didn't hack together some funky new API
>> when I added the VTK viewer. You use it like any other viewer, by calling
>> VecView(). Here's some sample code.
>>
>>     ierr =
>> PetscOptionsGetString(((PetscObject)snes)->prefix,"-snes_view_solution_vtk",filename,PETSC_MAX_PATH_LEN,&flg);CHKERRQ(ierr);
>>     if (flg) {
>>       PetscViewer viewer;
>>       ierr =
>> PetscViewerCreate(((PetscObject)snes)->comm,&viewer);CHKERRQ(ierr);
>>       ierr = PetscViewerSetType(viewer,PETSCVIEWERVTK);CHKERRQ(ierr);
>>       ierr = PetscViewerFileSetName(viewer,filename);CHKERRQ(ierr);
>>       ierr = VecView(snes->vec_sol,viewer);CHKERRQ(ierr);
>>       ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
>>     }
>>
>>
>
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