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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
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<A NAME="MatSetValue"><H1>MatSetValue</H1></A>
Set a single entry into a matrix. Not collective
<P>
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include <petscmat.h>
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Mat/MatSetValue.html#MatSetValue">MatSetValue</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> m,<A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> row,<A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> col,<A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> value,<A HREF="../Sys/InsertMode.html#InsertMode">InsertMode</A> mode)
</PRE>
<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>m </B></TD><TD>- the matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>row </B></TD><TD>- the row location of the entry
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>col </B></TD><TD>- the column location of the entry
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>value </B></TD><TD>- the value to insert
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mode </B></TD><TD>- either <A HREF="../Sys/INSERT_VALUES.html#INSERT_VALUES">INSERT_VALUES</A> or <A HREF="../Sys/ADD_VALUES.html#ADD_VALUES">ADD_VALUES</A>
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
For efficiency one should use <A HREF="../Mat/MatSetValues.html#MatSetValues">MatSetValues</A>() and set several or many
values simultaneously if possible.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatSetValues.html#MatSetValues">MatSetValues</A>(), MatSetValueLocal()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/../../include/petscmat.h.html#MatSetValue">src/mat/../../include/petscmat.h</A>
<BR><A HREF="./index.html">Index of all Mat routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex58.c.html">src/ksp/ksp/examples/tutorials/ex58.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex44f.F90.html">src/ksp/ksp/examples/tutorials/ex44f.F90.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex48.c.html">src/snes/examples/tutorials/ex48.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex47cu.cu.html">src/snes/examples/tutorials/ex47cu.cu.html</A><BR>
<A HREF="../../../src/ts/examples/tutorials/ex10.c.html">src/ts/examples/tutorials/ex10.c.html</A><BR>
<A HREF="../../../src/ts/examples/tutorials/ex24.c.html">src/ts/examples/tutorials/ex24.c.html</A><BR>
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