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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">“</span>How do I write the h5 file data in exactly the same way as it was written in original binary file written by Fortran?”<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">It is writing the file the same, the problem is that fortran stores arrays in column major, and C in row major order. You state “</span>it
automatically transposes the matrix” – <span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">
not true – it transposes the dimensions so that the data is still stored the same, but when you write array[z,y,x] from fortran, you want to read it as array[x,y,z] from C. The actual data on disk is the same as your binary fortran data, but the dimensions
are reversed compared to the same data from C.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Does that help? – the short answer is just swap the order of the dimensions in your read function in the C version and then things
should appear the same. (but you must declare your arrays with the dimensions flipped).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">If you want to actually transpose the data, then I’m sure google will provide a code snippet<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">I hope I’m not remembering this wrong.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">JB<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> paraview-bounces@paraview.org [mailto:paraview-bounces@paraview.org]
<b>On Behalf Of </b>Pradeep Jha<br>
<b>Sent:</b> 13 March 2013 10:58<br>
<b>To:</b> paraview@paraview.org<br>
<b>Subject:</b> [Paraview] Fortran wrapper of HDF5<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I recently noticed that when I am using the fortran wrapper of HDF5 to convert a binary file written by fortran into the "h5" format, it automatically transposes the matrix. Apparently, this is because HDF5 uses the C convention for writing
binary files, as explained in <a href="http://www.hdfgroup.org/HDF5/doc/UG/UG_frame12Dataspaces.html"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#222222">section: 7.3.2.5. </span>of this page.</a><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Is anyone aware of this situation? And any solutions for this problem? How do I write the h5 file data in exactly the same way as it was written in original binary file written by Fortran?<o:p></o:p></p>
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