Hi Tobias,<div>  This can alternatively be done by making u to be a discontinuous field and projecting your expression.<br><br>On Tuesday, 18 October 2016, Schwedes, Tobias &lt;<a href="mailto:t.schwedes14@imperial.ac.uk">t.schwedes14@imperial.ac.uk</a>&gt; wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">




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<p>Hi all,</p>
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<p>I would like to <span title="">
assign different values of some function u on subdomains of a 2-D domain. More precisely, I want to
</span>have u equal to 1 for y &gt; x and equal to 0 otherwise. For that reason I guess one needs to be able to define subdomains. Besides the Issue on
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<p><a href="https://github.com/firedrakeproject/firedrake/issues/723" target="_blank">https://github.com/<wbr>firedrakeproject/firedrake/<wbr>issues/723</a></p>
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<p>I didn&#39;t find any helpful information online. <span>Can someone help out please?</span> I attached the fenics version of what I want, hoping that might help!
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<p>All the best,</p>
<p>Tobias<br>
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</blockquote></div><br><br>-- <br><div dir="ltr"><div><a href="http://www.imperial.ac.uk/people/colin.cotter" target="_blank">http://www.imperial.ac.uk/people/colin.cotter</a><br><br><a href="http://www.cambridge.org/9781107663916" target="_blank">www.cambridge.org/9781107663916</a><br><br><img src="http://assets.cambridge.org/97811076/63916/cover/9781107663916.jpg"><br></div></div><br>