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<body class='hmmessage'><div dir='ltr'><div><span style="font-size: 12pt;">> As Matt said, read the manual section on vectors. Page 43 "Basic Vector operations":</span><br>> <br>> "On occasion, the user needs to access the actual elements of the vector. The routine VecGetArray() returns a pointer to the elements local to the process:<br>> VecGetArray(Vec v,PetscScalar **array);<br>> When access to the array is no longer needed, the user should call<br>> VecRestoreArray(Vec v, PetscScalar **array);<br>> Then have a look at any of the examples, for instance those listed here<br>> http://www.mcs.anl.gov/petsc/petsc-3.3/docs/manualpages/Vec/VecGetArray.html<br><span style="font-size: 12pt;">> Please read the documentation. We cannot develop your code for you.</span><br><span style="font-size: 12pt;">> Jose</span><br><br></div><div>Thanks in advance,</div><div><br></div><div>I'm already reading those manuals Petsc,Slepc, online Petsc/Slepc documents are always open in my browser.</div><div>But it seems it really take times to get used to it, which I think that this is what I'm suffering for the time being.</div><div><br></div><div>Can you confirm that having all <span style="font-size: 12pt;">the</span><span style="font-size: 12pt;"> eigenvalues as real and corresponding eigenvectors as zero and having </span></div><div><span style="font-size: 12pt;">imaginary parts is something weird. At least to confirm that I'm on a right path and this should be the point </span></div><div><span style="font-size: 12pt;">that I've to focus.</span></div><div><span style="font-size: 12pt;"><br></span></div><div><span style="font-size: 12pt;">Regards, </span></div> </div></body>
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