---
name: "PGARank"
section: "1"
platform: "linux"
package: "pgapack"
version: "1.1.1-3"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/PGARank"
---

# PGARank(1)

returns the rank of a string in a population.

## NAME

PGARank - returns the rank of a string in a population.

## DESCRIPTION

This is a value between 1,...,N (the population size).  The most fit string has rank 1, the least fit string has rank N.

## INPUT PARAMETERS

- ctx

  \- context variable

- p

  \- the index of the string whose rank is desired

- order

  \- an array containing a unique rank for each string

- n

  \- the size of the array order

## OUTPUT PARAMETERS

- none

  ## SYNOPSIS

```
#include "pgapack.h"
int  PGARank(ctx, p, order, n)
PGAContext *ctx
int p
int *order
int n
```

## LOCATION

fitness.c

## EXAMPLE

```
Example:
Determine the rank of string p.
PGAContext *ctx;
int i, popsize, rank, *order;
double *fitness;
popsize = PGAGetPopsize(ctx);
order   = (int *)   malloc(sizeof(int)    * popsize);
fitness = (double *)malloc(sizeof(double) * popsize);
for(i=0;i<popsize; i++) {
fitness[i] = PGAGetFitness(ctx, p, PGA_OLDPOP);
order[i]   = i;
}
PGADblHeapSort(ctx, fitness, order, popsize);
rank = PGARank(ctx, p, order, popsize)
```