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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="MatDiagonalScale"><H1>MatDiagonalScale</H1></A>
Scales a matrix on the left and right by diagonal matrices that are stored as vectors. Either of the two scaling matrices can be NULL.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Mat/MatDiagonalScale.html#MatDiagonalScale">MatDiagonalScale</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> mat,<A HREF="../Vec/Vec.html#Vec">Vec</A> l,<A HREF="../Vec/Vec.html#Vec">Vec</A> r)
</PRE>
Collective on <A HREF="../Mat/Mat.html#Mat">Mat</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mat </B></TD><TD>- the matrix to be scaled
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>l </B></TD><TD>- the left scaling vector (or NULL)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>r </B></TD><TD>- the right scaling vector (or NULL)
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
<A HREF="../Mat/MatDiagonalScale.html#MatDiagonalScale">MatDiagonalScale</A>() computes A = LAR, where
L = a diagonal matrix (stored as a vector), R = a diagonal matrix (stored as a vector)
The L scales the rows of the matrix, the R scales the columns of the matrix.
<P>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatScale.html#MatScale">MatScale</A>(), <A HREF="../Mat/MatShift.html#MatShift">MatShift</A>(), <A HREF="../Mat/MatDiagonalSet.html#MatDiagonalSet">MatDiagonalSet</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/interface/matrix.c.html#MatDiagonalScale">src/mat/interface/matrix.c</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/snes/examples/tutorials/ex70.c.html">src/snes/examples/tutorials/ex70.c.html</A><BR>
<A HREF="../../../src/ts/examples/tutorials/ex50.c.html">src/ts/examples/tutorials/ex50.c.html</A><BR>
<A HREF="../../../src/tao/unconstrained/examples/tutorials/spectraladjointassimilation.c.html">src/tao/unconstrained/examples/tutorials/spectraladjointassimilation.c.html</A><BR>
<A HREF="../../../src/tao/pde_constrained/examples/tutorials/elliptic.c.html">src/tao/pde_constrained/examples/tutorials/elliptic.c.html</A><BR>
<A HREF="../../../src/tao/pde_constrained/examples/tutorials/parabolic.c.html">src/tao/pde_constrained/examples/tutorials/parabolic.c.html</A><BR>
<A HREF="../../../src/tao/pde_constrained/examples/tutorials/hyperbolic.c.html">src/tao/pde_constrained/examples/tutorials/hyperbolic.c.html</A><BR>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/mat/impls/aij/mpi/mpiaij.c.html#MatDiagonalScale_MPIAIJ">MatDiagonalScale_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c</A><BR>
<A HREF="../../../src/mat/impls/aij/seq/aij.c.html#MatDiagonalScale_SeqAIJ">MatDiagonalScale_SeqAIJ in src/mat/impls/aij/seq/aij.c</A><BR>
<A HREF="../../../src/mat/impls/baij/mpi/mpibaij.c.html#MatDiagonalScale_MPIBAIJ">MatDiagonalScale_MPIBAIJ in src/mat/impls/baij/mpi/mpibaij.c</A><BR>
<A HREF="../../../src/mat/impls/baij/seq/baij2.c.html#MatDiagonalScale_SeqBAIJ">MatDiagonalScale_SeqBAIJ in src/mat/impls/baij/seq/baij2.c</A><BR>
<A HREF="../../../src/mat/impls/baij/seq/baijmkl/baijmkl.c.html#MatDiagonalScale_SeqBAIJMKL">MatDiagonalScale_SeqBAIJMKL in src/mat/impls/baij/seq/baijmkl/baijmkl.c</A><BR>
<A HREF="../../../src/mat/impls/composite/mcomposite.c.html#MatDiagonalScale_Composite">MatDiagonalScale_Composite in src/mat/impls/composite/mcomposite.c</A><BR>
<A HREF="../../../src/mat/impls/dense/mpi/mpidense.c.html#MatDiagonalScale_MPIDense">MatDiagonalScale_MPIDense in src/mat/impls/dense/mpi/mpidense.c</A><BR>
<A HREF="../../../src/mat/impls/dense/seq/dense.c.html#MatDiagonalScale_SeqDense">MatDiagonalScale_SeqDense in src/mat/impls/dense/seq/dense.c</A><BR>
<A HREF="../../../src/mat/impls/elemental/matelem.cxx.html#MatDiagonalScale_Elemental">MatDiagonalScale_Elemental in src/mat/impls/elemental/matelem.cxx</A><BR>
<A HREF="../../../src/mat/impls/is/matis.c.html#MatDiagonalScale_IS">MatDiagonalScale_IS in src/mat/impls/is/matis.c</A><BR>
<A HREF="../../../src/mat/impls/mffd/mffd.c.html#MatDiagonalScale_MFFD">MatDiagonalScale_MFFD in src/mat/impls/mffd/mffd.c</A><BR>
<A HREF="../../../src/mat/impls/nest/matnest.c.html#MatDiagonalScale_Nest">MatDiagonalScale_Nest in src/mat/impls/nest/matnest.c</A><BR>
<A HREF="../../../src/mat/impls/normal/normm.c.html#MatDiagonalScale_Normal">MatDiagonalScale_Normal in src/mat/impls/normal/normm.c</A><BR>
<A HREF="../../../src/mat/impls/sbaij/mpi/mpisbaij.c.html#MatDiagonalScale_MPISBAIJ">MatDiagonalScale_MPISBAIJ in src/mat/impls/sbaij/mpi/mpisbaij.c</A><BR>
<A HREF="../../../src/mat/impls/sbaij/seq/sbaij2.c.html#MatDiagonalScale_SeqSBAIJ">MatDiagonalScale_SeqSBAIJ in src/mat/impls/sbaij/seq/sbaij2.c</A><BR>
<A HREF="../../../src/mat/impls/sell/mpi/mpisell.c.html#MatDiagonalScale_MPISELL">MatDiagonalScale_MPISELL in src/mat/impls/sell/mpi/mpisell.c</A><BR>
<A HREF="../../../src/mat/impls/sell/seq/sell.c.html#MatDiagonalScale_SeqSELL">MatDiagonalScale_SeqSELL in src/mat/impls/sell/seq/sell.c</A><BR>
<A HREF="../../../src/mat/impls/shell/shell.c.html#MatDiagonalScale_Shell">MatDiagonalScale_Shell in src/mat/impls/shell/shell.c</A><BR>
<A HREF="../../../src/mat/impls/submat/submat.c.html#MatDiagonalScale_SubMatrix">MatDiagonalScale_SubMatrix in src/mat/impls/submat/submat.c</A><BR>
<BR><A HREF="./index.html">Index of all Mat routines</A>
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