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<body class='hmmessage'><div dir='ltr'>Hi,<br><br> I am confused about calling<br><pre>PetscErrorCode DMDAGetNeighbors(DM da,const PetscMPIInt *ranks[]),<br><br>I am calling the function like this:<br><br>PetscMPIInt ** neighbors;<br>DMDAGetNeighbors(da, neighbors);<br><br>but the error shows<br><br>src/solver.cpp:152: error: invalid conversion from ‘PetscMPIInt**’ to ‘const PetscMPIInt**’<br>src/solver.cpp:152: error: initializing argument 2 of ‘PetscErrorCode DMDAGetNeighbors(_p_DM*, const PetscMPIInt**)’ <br><br>How should I define the neighbors before calling the function? Sorry it's not a pure Petsc question, but I am new in c++. Thanks for any comments.<br></pre> </div></body>
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