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    Hi Yan-Fei,<br>
    <br>
    I don't think this will work out of the box. Matt may have more
    insight here.<br>
    <br>
    Best,<br>
    Jonah<br>
    <br>
    <div class="moz-cite-prefix">On 16-03-31 01:03 AM, Jiang, Yanfei
      wrote:<br>
    </div>
    <blockquote
cite="mid:CANixPaszRn61A=gg-FrZjoFbP1cfZhyF-d_xqrx+9ASGWpgWSg@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hi Matt and Jonah,
        <div><br>
        </div>
        <div>    I think I can use load_hexahedral_mesh to load data
          from each mesh block. But it cannot use three arrays (xgrid,
          ygrid, zgrid) to define the whole mesh due to mesh refinement.
          I guess I can create a dict to collect the data from each mesh
          block, as in load_amr_grids (but not the same). The question
          is will such a data structure (a dict of hexahedral_mesh) be
          recognized by yt? </div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Wed, Mar 30, 2016 at 6:01 PM, Jonah
          Miller <span dir="ltr"><<a moz-do-not-send="true"
              href="mailto:jonah.maxwell.miller@gmail.com"
              target="_blank">jonah.maxwell.miller@gmail.com</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Yanfei,<br>
            <br>
            To add to Matt's comment. Here is the documentation for
            using load_hexahedral_mesh.<br>
            <a moz-do-not-send="true"
href="http://yt-project.org/doc/examining/loading_data.html#semi-structured-grid-data"
              rel="noreferrer" target="_blank">http://yt-project.org/doc/examining/loading_data.html#semi-structured-grid-data</a><br>
            <a moz-do-not-send="true"
href="http://yt-project.org/doc/reference/api/generated/yt.frontends.stream.data_structures.load_hexahedral_mesh.html"
              rel="noreferrer" target="_blank">http://yt-project.org/doc/reference/api/generated/yt.frontends.stream.data_structures.load_hexahedral_mesh.html</a><br>
            <br>
            Best,<br>
            Jonah
            <div class="HOEnZb">
              <div class="h5"><br>
                <br>
                On 16-03-30 05:15 PM, Matthew Turk wrote:<br>
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex">
                  Hi Yanfei,<br>
                  <br>
                  This is possible -- but it will also slow some things
                  down.  You can<br>
                  use the load_hexahedral_mesh function, and there're
                  examples of this.<br>
                  This takes away some of the optimizations that regular
                  grids can do,<br>
                  but we're hoping to add them back in shortly.  Like
                  the other<br>
                  functions it too takes a geometry argument.<br>
                  <br>
                  -Matt<br>
                  <br>
                  On Wed, Mar 30, 2016 at 2:49 PM, Jiang, Yanfei<br>
                  <<a moz-do-not-send="true"
                    href="mailto:yanfei.jiang@cfa.harvard.edu"
                    target="_blank">yanfei.jiang@cfa.harvard.edu</a>>
                  wrote:<br>
                  <blockquote class="gmail_quote" style="margin:0 0 0
                    .8ex;border-left:1px #ccc solid;padding-left:1ex">
                    Hi Jonah,<br>
                    <br>
                        I am able to load the data to yt now using
                    load_amr_grids(). I notice<br>
                    that it can also set geometry to spherical. This is
                    great. But to make life<br>
                    more complicate. Is it possible to let yt know that
                    the grid is logarithmic?<br>
                    Currently, load_amr_grids() just take left and right
                    edges of each block. I<br>
                    guess yt assumes the grid is uniform between left
                    and right edges. Is it<br>
                    possible to provide arrays of coordinate values for
                    each cell in each block?<br>
                    <br>
                    Thanks.<br>
                    <br>
                    On Tue, Mar 29, 2016 at 6:58 PM, Jonah Miller<br>
                    <<a moz-do-not-send="true"
                      href="mailto:jonah.maxwell.miller@gmail.com"
                      target="_blank">jonah.maxwell.miller@gmail.com</a>>
                    wrote:<br>
                    <blockquote class="gmail_quote" style="margin:0 0 0
                      .8ex;border-left:1px #ccc solid;padding-left:1ex">
                      Hi Yan-Feng,<br>
                      <br>
                      I haven't tried it, but I think there is
                      functionality for this. You can<br>
                      use the load_amr_grids() function which can load
                      amr data in Cartesian,<br>
                      spherical, or polar coordinates. Here's the
                      documentation:<br>
                      <br>
                      <br>
                      <a moz-do-not-send="true"
href="http://yt-project.org/doc/examining/generic_array_data.html#loading-numpy-array"
                        rel="noreferrer" target="_blank">http://yt-project.org/doc/examining/generic_array_data.html#loading-numpy-array</a><br>
                      <br>
                      <br>
                      <a moz-do-not-send="true"
href="http://yt-project.org/doc/reference/api/generated/yt.frontends.stream.data_structures.load_amr_grids.html#yt.frontends.stream.data_structures.load_amr_grids"
                        rel="noreferrer" target="_blank">http://yt-project.org/doc/reference/api/generated/yt.frontends.stream.data_structures.load_amr_grids.html#yt.frontends.stream.data_structures.load_amr_grids</a><br>
                      <br>
                      Best,<br>
                      Jonah<br>
                      <br>
                      On Tue, Mar 29, 2016, 6:35 PM Jiang, Yanfei <<a
                        moz-do-not-send="true"
                        href="mailto:yanfei.jiang@cfa.harvard.edu"
                        target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:yanfei.jiang@cfa.harvard.edu">yanfei.jiang@cfa.harvard.edu</a></a>><br>
                      wrote:<br>
                      <blockquote class="gmail_quote" style="margin:0 0
                        0 .8ex;border-left:1px #ccc
                        solid;padding-left:1ex">
                        Hi,<br>
                                  I have some data from a new version of
                        Athena simulations. It is<br>
                        in spherical polar coordinate with mesh
                        refinement written in HDF5. The data<br>
                        structure is similar to flash data but not the
                        same. Does anyone have<br>
                        suggestions to load such data to yt directly?<br>
                        <br>
                        Thank you.<br>
                        --<br>
                        Yan-Fei Jiang<br>
                        <br>
                        Einstein Fellow<br>
                        Harvard-Smithsonian Center for Astrophysics<br>
                        60 Garden Street, Cambridge MA USA 02138<br>
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                    <br>
                    <br>
                    --<br>
                    Yan-Fei Jiang<br>
                    <br>
                    Einstein Fellow<br>
                    Harvard-Smithsonian Center for Astrophysics<br>
                    60 Garden Street, Cambridge MA USA 02138<br>
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        <br>
        <br clear="all">
        <div><br>
        </div>
        -- <br>
        <div class="gmail_signature">
          <div dir="ltr">Yan-Fei Jiang
            <div><br>
              <div>Einstein Fellow</div>
              <div>Harvard-Smithsonian Center for Astrophysics</div>
              <div>60 Garden Street, Cambridge MA USA 02138</div>
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