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<A NAME="VecScatterRemap"><H1>VecScatterRemap</H1></A>
Remaps the "from" and "to" indices in a vector scatter context. FOR EXPERTS ONLY!
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscvec.h"
int VecScatterRemap(VecScatter scat,int *rto,int *rfrom)
</PRE>
Collective on <A HREF="../Vec/VecScatter.html#VecScatter">VecScatter</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>scat </B></TD><TD>- vector scatter context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>from </B></TD><TD>- remapping for "from" indices (may be <A HREF="../Sys/PETSC_NULL.html#PETSC_NULL">PETSC_NULL</A>)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>to </B></TD><TD>- remapping for "to" indices (may be <A HREF="../Sys/PETSC_NULL.html#PETSC_NULL">PETSC_NULL</A>)
</TD></TR></TABLE>
<P>
<P>
Notes: In the parallel case the todata is actually the indices
from which the data is TAKEN! The from stuff is where the
data is finally put. This is VERY VERY confusing!
<P>
In the sequential case the todata is the indices where the
data is put and the fromdata is where it is taken from.
This is backwards from the paralllel case! CRY! CRY! CRY!
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>developer
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/vec/utils/vscat.c.html#VecScatterRemap">src/vec/utils/vscat.c</A>
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