<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><DIV>Hello</DIV>
<DIV> When I try to view a matrix with the option -mat_view_draw, I get :<BR> [0]PETSC ERROR: PETSc installed without X windows on this machine proceeding without graphics.</DIV>
<DIV> But calling MatView in side the code is ok.</DIV>
<DIV> I install the libX11-dev as Matt said in one message in the petsc-users in 2008, but the problem doesn't solved.</DIV>
<DIV> The system is ubuntu 10.04.</DIV>
<DIV> So what might be the reason?</DIV>
<DIV> Thanks.</DIV>
<DIV> Jim<BR><BR> </DIV></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>