On 2014-02-07 20:23, Chris Richardson wrote:
Hi Dave
I don't think dolfin can do this at present.
In my experience, the visualisation software (e.g. paraview) doesn't
draw quadratic elements properly anyway, but approximates as piecewise
linear.
I did test this out experimentally for xdmf.
That was my experience too, but it was quite some years ago now. Writing
P2 elements to a VTK file and visualising in ParaView did not show the
true underlying triangulation.
I guess you could do a global refine of your mesh and interpolate to
P1 to get a similar result.
I think that is this the best approach, for now, for higher-order
elements.
Garth
Chris
On 7 Feb 2014 19:27, David Bernstein <[email protected]> wrote:
Hi Everyone, When I write a pvd file from a simulation which uses
second order triangles the VTK element type that gets written is #5,
i.e., a 3-node triangle.
Is there a way to get fenics to realize that if the function getting
written is in a space of second order Lagrange elements to write a pvd
file using the VTK_QUADRATIC_TRIANGLE (#22) type?
I would like to see what effect this has on how paraview displays the
results.
Regards,
Dave
VTK file format reference: http://www.vtk.org/VTK/img/file-formats.pdf
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