<div dir="ltr"><div><div><div><div><div><div>Hi yt-users!<br><br></div>I am trying to analyze a cylindrical loop in my dataset.  So what I want to do is to create two disks:<br><br></div>d1 = ds.disk<span class="">([</span><span class="">0.5</span><span class="">,</span> <span class="">0.5</span><span class="">,</span> <span class="">0.5</span><span class="">],</span> <span class="">[</span><span class="">0.</span><span class="">,</span> <span class="">0.</span><span class="">,</span> <span class="">1.</span><span class="">],</span>
                      <span class="">(</span><span class="">8</span><span class="">,</span> <span class="">'kpc'</span><span class="">),</span> <span class="">(</span><span class="">1</span><span class="">,</span> <span class="">'kpc'</span><span class="">))<br></span></div><span class="">d2 = ds.disk</span><span class="">([</span><span class="">0.5</span><span class="">,</span> <span class="">0.5</span><span class="">,</span> <span class="">0.5</span><span class="">],</span> <span class="">[</span><span class="">0.</span><span class="">,</span> <span class="">0.</span><span class="">,</span> <span class="">1.</span><span class="">],</span>
                      <span class="">(</span><span class="">7</span><span class="">,</span> <span class="">'kpc'</span><span class="">),</span> <span class="">(</span><span class="">1</span><span class="">,</span> <span class="">'kpc'</span><span class="">))<br><br></span></div><span class="">and have r1 be the region containing all the cells in d1 and NOT in d2.  I feel like there must be an easy way to do this, but can't think of it.  Also, searching the yt-users archive kept coming up with an error.<br><br></span></div><span class="">Thanks in advance!<br><br></span></div><span class="">Stephanie<br><br></span><div><div><div><div><div><div><div><div><div><div class="gmail_signature"><div dir="ltr"><div><div><div><font face="garamond,serif">--<br>Dr. Stephanie Tonnesen<br></font></div><font face="garamond,serif">Alvin E. Nashman Postdoctoral Fellow<br></font></div><font face="garamond,serif">Carnegie Observatories, Pasadena, CA<br></font></div><font face="garamond,serif"><a href="mailto:stonnes@gmail.com" target="_blank">stonnes@gmail.com</a><br></font></div></div></div>
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