# Function to Compute an Orthogonal Projection Matrix Based on an Arbitrary Matrix

### Description

Function to compute an orthogonal projection matrix based on an arbitrary matrix.

### Usage

1 | ```
B2P(x)
``` |

### Arguments

`x` |
A matrix with p rows and k columns. |

### Details

The orthogonal projection matrix *P* corresponding to matrix *x* is defined as *P=x (x^T x)^-1 x^T*.

### Value

The resulting orthogonal projection matrix.

### Author(s)

Klaus Nordhausen

### See Also

`O2P`

### Examples

1 2 3 |

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