pgasetrealinitpercent(2) [debian man page]

PGASetRealInitPercent(2)					      PGAPack						  PGASetRealInitPercent(2)

NAME

       PGASetRealInitPercent - sets the upper and lower bounds for randomly initializing real-valued genes.

DESCRIPTION

       For  each  gene	these bounds define an interval from which the initial allele value is selected uniformly randomly.  With this routine the
       user specifies a median value and a percent offset for each allele.

INPUT PARAMETERS

       ctx    - context variable
       median - an array containing the mean value of the interval
       percent
	      - an array containing the percent offset to add and subtract to the median to define the interval

OUTPUT PARAMETERS

       none

SYNOPSIS

       #include "pgapack.h"
       void  PGASetRealInitPercent(ctx, median, percent)
       PGAContext *ctx
       double *median
       double *percent

LOCATION

       real.c

EXAMPLE

       Set the initialization routines to select a value for each real-valued
       gene i uniformly randomly from the interval [i-v,i+v], where $v = i/2$.
       Assumes all strings are the same length.

       PGAContext *ctx;
       double *median, *percent;
       int i, stringlen;
       :
       stringlen = PGAGetStringLength(ctx);
       median  = (double *) malloc(stringlen*sizeof(double));
       percent = (double *) malloc(stringlen*sizeof(double));
       for(i=0;i<stringlen;i++) {
       median[i]  = (double) i;
       percent[i] = 0.5;
       }
       PGASetRealInitPercent(ctx, median, percent);

								     05/01/95						  PGASetRealInitPercent(2)

PGACreate(8)							      PGAPack							      PGACreate(8)

NAME

       PGACreate - creates an uninitialized context variable.  The Fortran version of this function call contains only the last three arguments

INPUT PARAMETERS

       argc   - address of the count of the number of command line arguments.
       argv   - array of command line arguments.
       datatype
	      -  the  data  type  used	for  the  strings.   Must  be  one  of	PGA_DATATYPE_BINARY, PGA_DATATYPE_CHARACTER, PGA_DATATYPE_INTEGER,
	      PGA_DATATYPE_REAL, or PGA_DATATYPE_USER
       binary -valued, character-valued, integer-valued,
       real   -valued, or a user-defined datatype, respectively.
       len    - the string length (number of genes).
       maxormin
	      - the direction of optimization. Must be one of PGA_MAXIMIZE or PGA_MINIMIZE for maximization or minimization, respectively.

OUTPUT PARAMETERS

       none

SYNOPSIS

       #include "pgapack.h"
       PGAContext * PGACreate(argc, argv, datatype, len, maxormin)
       int *argc
       char **argv
       int datatype
       int len
       int maxormin

LOCATION

       create.c

EXAMPLE

       Example:

       In C:
       void main(int argc, char **argv) {
       PGAContext *ctx;
       :
       ctx = PGACreate(&argc, argv, PGA_DATATYPE_BINARY, 100, PGA_MAXIMIZE);
       :
       //  Set options here
       :
       PGASetUp(ctx);
       :
       //  Run the GA here
       :
       PGADestroy(ctx);
       }

       In FORTRAN:
       integer ctx
       :
       ctx = PGACreate(PGA_DATATYPE_BINARY, 100, PGA_MAXIMIZE)
       :
       c       Set options here
       :
       call PGASetUp(ctx)
       :
       c       Run the GA here
       :
       call PGADestroy(ctx)
       stop
       end

								     05/01/95							      PGACreate(8)