Hi all, When setting the Mat indices, like the example: src/ts/examples/tutorials/ex10, I noticed that on line
508: col[0] = i-1; 509: col[1] = i; 510: col[2] = i+1<info.mx ? i+1 : -1; 511: MatSetValuesBlocked<http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatSetValuesBlocked.html#MatSetValuesBlocked>(B,1,&i,3,col,&K[0][0],INSERT_VALUES<http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/INSERT_VALUES.html#INSERT_VALUES>); How about the case that when i=0, then col[0]=-1 and i=info.mx then col[2]=-1? My question is, is the Mat default indices starting from -1? Thank you in advance! Best regards, Feng
