You use a ViewerCreate() and then<br><br><a href="http://www.mcs.anl.gov/petsc/petsc-as/snapshots/petsc-current/docs/manualpages/Viewer/PetscViewerFileSetMode.html">http://www.mcs.anl.gov/petsc/petsc-as/snapshots/petsc-current/docs/manualpages/Viewer/PetscViewerFileSetMode.html</a><br>
<br>to set append, and then FileSetName() to open the file.<br><br> Matt<br><br><div class="gmail_quote">On Wed, Dec 31, 2008 at 10:24 AM, (Rebecca) Xuefei YUAN <span dir="ltr"><<a href="mailto:xy2102@columbia.edu">xy2102@columbia.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,All,<br>
<br>
I tried to use PetscFOpen to write the numerical result to a file, and I would like to use the mode "a+" to add my result to the existing content in my file. However, whenever the new result comes out, it will overwrite the existing content in the file. Is there any problem here?<br>
<br>
Thanks a lot!<br><font color="#888888">
<br>
Rebecca<br>
<br>
</font></blockquote></div><br><br clear="all"><br>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener<br>