---
name: "PGASetBinaryInitProb"
section: "2"
platform: "linux"
package: "pgapack"
version: "1.1.1-3"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/PGASetBinaryInitProb"
---

# PGASetBinaryInitProb(2)

specify the probability of initializing an allele to "1" when creating a PGA\_DATATYPE\_BINARY string.

## NAME

PGASetBinaryInitProb - specify the probability of initializing an allele to "1" when creating a PGA\_DATATYPE\_BINARY string.

## DESCRIPTION

The default value is 0.5.

## INPUT PARAMETERS

- ctx

  \- context variable

- p

  \- the binary initialization probability

## OUTPUT PARAMETERS

- none

  ## SYNOPSIS

```
#include "pgapack.h"
void  PGASetBinaryInitProb(ctx, probability)
PGAContext *ctx
double probability
```

## LOCATION

binary.c

## EXAMPLE

```
Example:
Set approximately 1 percent of all binary alleles to "1" when randomly
initializing the population.
PGAContext *ctx;
:
PGASetBinaryInitProb(ctx, 0.01);
```