<div class="gmail_extra">On Sat, Nov 10, 2012 at 3:02 PM, Matthew Knepley <span dir="ltr"><<a href="mailto:knepley@gmail.com" target="_blank">knepley@gmail.com</a>></span> wrote: <div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div id=":5bl">
<div class="im"><br>
> How does one get an IS containing _only_ the labeled points?<br>
<br>
</div>DMComplexGetStratumIS()<br></div></blockquote><div><br></div><div>Great. Under what circumstances do you call this routine and get back an IS with mixed dimension?</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div id=":5bl">
<div class="im"><br>
>><br>
>> > Can you answer how you can distinguish a quad from a tet in a<br>
>> > non-interpolated mesh?<br>
>><br>
>> You can't, but that is the point. You are not supposed to distinguish<br>
>> them.<br>
><br>
><br>
> Hmm, so these are the same at the category-theory level, but definitely not<br>
> at the mesh topology level. It doesn't seem right to not distinguish them at<br>
> all. How do you write DMComplexInterpolate for mixed-dim strata?<br>
<br>
</div>Interpolation is analysis. You need to know what dimension you are in, etc.</div></blockquote></div><br></div><div class="gmail_extra">But it's still topological rather than geometric. You don't need coordinates, for example.</div>