[petsc-users] dmplex confusion in refereeing to stratum values (are they height or depth)

[Matthew Knepley]

On Fri, Jun 29, 2018 at 9:49 AM Hassan Raiesi <
Hassan.Raiesi at aero.bombardier.com> wrote:

> Hi,
>
>
>
> I’m trying to understand the dmplex interface, and hope somebody could
> clarify what are the values of stratum used, i.e in DMLabel, and many other
> DMplex functions.
>
> Is it refereeing to the stratum height or the stratum depth by “value”, or
> none of them, for example in
>
> DMPlexSetLabelValue, the value refers to depth or height, same is for
> several other places,
>

DMLabel maps an integer to a set of mesh points. These values can be
anything. A stratum is the
set of points with the same value.

Some specific labels attach meaning to the values. For example, the depth
label inside a Plex marks
the depth of each mesh point, so that we can support

  DMPlexGetDepthStratum()
  DMPlexGetHeightStratum()

  Thanks,

     Matt

Thank you
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://www.cse.buffalo.edu/~knepley/ <http://www.caam.rice.edu/~mk51/>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20180630/0f0ba37e/attachment.html>