<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>If by "non-uniform" you mean that you have grids of differing resolutions then yt and grid data format support that, but if you have cell spacing varying _inside_ a grid then yt does not yet support this. We're working on it, but it will probably take some time before it is operational.<br><br><br><div><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><span style="background-color: rgba(255, 255, 255, 0);">=================================</span></div><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><span style="background-color: rgba(255, 255, 255, 0);">John ZuHone, Chandra/ACIS operations<span class="Apple-tab-span" style="white-space: pre;"> </span></span></div><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><span style="background-color: rgba(255, 255, 255, 0);">Harvard-Smithsonian Center for Astrophysics<br class=""><br class=""></span></div><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><font color="#000000"><span style="background-color: rgba(255, 255, 255, 0);"><a dir="ltr" href="x-apple-data-detectors://0" x-apple-data-detectors="true" x-apple-data-detectors-type="address" x-apple-data-detectors-result="0">60 Garden St.</a>, MS-67 (w) <a dir="ltr" href="tel:617-496-1816" x-apple-data-detectors="true" x-apple-data-detectors-type="telephone" x-apple-data-detectors-result="1/0">617-496-1816</a><br class=""><a dir="ltr" href="x-apple-data-detectors://1/1" x-apple-data-detectors="true" x-apple-data-detectors-type="address" x-apple-data-detectors-result="1/1">Cambridge, MA 02138</a>. (m) <a dir="ltr" href="tel:781-708-5004" x-apple-data-detectors="true" x-apple-data-detectors-type="telephone" x-apple-data-detectors-result="1/2">781-708-5004</a></span></font></div><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><span style="background-color: rgba(255, 255, 255, 0);"><br class=""></span></div><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><font color="#000000"><span style="background-color: rgba(255, 255, 255, 0);"><a href="mailto:john.zuhone@cfa.harvard.edu" class="">john.zuhone@cfa.harvard.edu</a><br class=""><a dir="ltr" href="http://hea-www.cfa.harvard.edu/~jzuhone" x-apple-data-detectors="true" x-apple-data-detectors-type="link" x-apple-data-detectors-result="3">http://hea-www.cfa.harvard.edu/~jzuhone</a><br class="">=================================</span></font><br class=""></div></div></div><div><br>On May 2, 2016, at 7:18 PM, Andrea Negri <<a href="mailto:negri.andre@gmail.com">negri.andre@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><span>Dear John,</span><br><span></span><br><span>thanks for the suggestions. Do you know if the grid data format is</span><br><span>compatible with a non uniform mesh? I was thinking of porting my</span><br><span>outputs in this format.</span><br><span></span><br><span></span><br><span>Cheers,</span><br><span>Andrea</span><br><span></span><br><span>On 2 May 2016 at 18:52, John Zuhone <<a href="mailto:jzuhone@gmail.com">jzuhone@gmail.com</a>> wrote:</span><br><blockquote type="cite"><span>Hi Andrea,</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>yt has some support for axisymmetric grids in 2D, so you won’t need to convert to a 3D array.</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>The bigger issue is the logarithmic grid spacing. This is currently being worked on, but is in a very early state. Currently what it does is use “logr” as the coordinate instead of r, which may not be very ideal for every situation. A lot of yt functionality is probably not compatible with this way of doing things.</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>Nevertheless, if you would like to explore it further, let us know.</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>Best,</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>John Z</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><blockquote type="cite"><span>On May 2, 2016, at 10:53 AM, Andrea Negri <<a href="mailto:negri.andre@gmail.com">negri.andre@gmail.com</a>> wrote:</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>Of course. I have a 2.5D simulation in spherical coordinates. It is</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>axial symmetric, so the actual grid is 2D, r and theta. The grid is</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>structured, the grid spacing in theta is constant, while the spacing</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>in r follows a geometrical progression, i.e. dr[i+1] = dr[i] * factor,</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>where factor is a constant.</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>I don't know if yt supports axisymmetric grids, but I can bypass this</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>issue by duplicating the 2D array into a 3D one. Sure, it is not</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>efficient...</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>My ultimate goal is to produce projections, off axis projections and</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>mock X-ray observations.</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>Thanks,</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>Andrea</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>On 2 May 2016 at 16:43, Nathan Goldbaum <<a href="mailto:nathan12343@gmail.com">nathan12343@gmail.com</a>> wrote:</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>Can you share a little bit more detail about your grid structure? I know</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>that support for log-radial bins is being worked on right now, for example.</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>On Mon, May 2, 2016 at 3:18 AM, Andrea Negri <<a href="mailto:negri.andre@gmail.com">negri.andre@gmail.com</a>> wrote:</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>Hi all,</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>I'm trying to read ZEUS-MP 2 data, and I'm building my programs step</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>by step. I was able to load data regularly spaced in spherical</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>coordinates. However, I actually have a non-uniform radial grid.</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>I tried with the script in attachment, but I have got odd errors...</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>Also, I have found this page, is it relevant for my case (just because</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>my code is mentioned, the answer would be yes :) )?</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span><a href="https://bitbucket.org/yt_analysis/grid_data_format">https://bitbucket.org/yt_analysis/grid_data_format</a></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>Thanks,</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>Andrea</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>_______________________________________________</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>yt-users mailing list</span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span><a href="mailto:yt-users@lists.spacepope.org">yt-users@lists.spacepope.org</a></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span><a href="http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org">http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org</a></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>_______________________________________________</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>yt-users mailing list</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span><a href="mailto:yt-users@lists.spacepope.org">yt-users@lists.spacepope.org</a></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span><a href="http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org">http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org</a></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>_______________________________________________</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>yt-users mailing list</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span><a href="mailto:yt-users@lists.spacepope.org">yt-users@lists.spacepope.org</a></span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span><a href="http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org">http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org</a></span><br></blockquote></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>_______________________________________________</span><br></blockquote><blockquote type="cite"><span>yt-users mailing list</span><br></blockquote><blockquote type="cite"><span><a href="mailto:yt-users@lists.spacepope.org">yt-users@lists.spacepope.org</a></span><br></blockquote><blockquote type="cite"><span><a href="http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org">http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org</a></span><br></blockquote><span>_______________________________________________</span><br><span>yt-users mailing list</span><br><span><a href="mailto:yt-users@lists.spacepope.org">yt-users@lists.spacepope.org</a></span><br><span><a 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