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.TH PGASortPop 8 "05/01/95" " " "PGAPack"
.SH NAME
PGASortPop \- Creates an (internal) array of indices according to one of
three criteria.
.SH DESCRIPTION
If PGA_POPREPL_BEST is used (the default) the array is
sorted from most fit to least fit. If PGA_POPREPL_RANDOM_REP is
used the indices in the array are selected randomly with replacement.
If PGA_POPREPL_RANDOM_NOREP is used the indices in the array are selected
randomly without replacement. The function PGASetPopReplaceType() is used
to specify which strategy is used. The indices of the sorted population
members may then be accessed from the internal array via
PGAGetSortedPopIndex(). This routine is typically used during population
replacement.
.SH INPUT PARAMETERS
.PD 0
.TP
ctx
- context variable
.PD 0
.TP
popindex
- symbolic constant of the population from which to create
the srted array.
.PD 1
.SH OUTPUT PARAMETERS
.PD 0
.TP
none
.PD 1
.SH SYNOPSIS
.nf
#include "pgapack.h"
void PGASortPop(ctx, pop)
PGAContext *ctx
int pop
.fi
.SH LOCATION
pop.c
.SH EXAMPLE
.nf
Example:
Copy the five best strings from the old population into the new
population. The rest of the new population will be created by
recombination, and is not shown.
PGAContext *ctx;
int i,j;
:
PGASetPopReplaceType(ctx,PGA_POPREPL_BEST)
:
PGASortPop(ctx, PGA_OLDPOP);
for ( i=0; i < 5; i++) {
j = PGAGetSortedPopIndex(ctx, i);
PGACopyIndividual (ctx, j, PGA_OLDPOP, i, PGA_NEWPOP);
:
.fi
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