---
name: "lin_alg.hpp"
section: "3"
platform: "linux"
package: "mlpack-doc"
version: "1.0.10-1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/lin_alg.hpp"
---

# lin\_alg.hpp(3)

## NAME

src/mlpack/core/math/lin\_alg.hpp -

## SYNOPSIS

### Namespaces

 **mlpack**\
 *Linear algebra utility functions, generally performed on matrices or vectors.*   **mlpack::math**\
 *Miscellaneous math routines.*

### Functions

void **mlpack::math::Center** (const arma::mat &x, arma::mat &xCentered)\
 *Creates a centered matrix, where centering is done by subtracting the sum over the columns (a column vector) from each column of the matrix.*  void **mlpack::math::Orthogonalize** (const arma::mat &x, arma::mat &W)\
 *Orthogonalize x and return the result in W, using eigendecomposition.*  void **mlpack::math::Orthogonalize** (arma::mat &x)\
 *Orthogonalize x in-place.*  void **mlpack::math::RandVector** (arma::vec &v)\
 *Overwrites a dimension-N vector to a random vector on the unit sphere in R^N.*  void **mlpack::math::RemoveRows** (const arma::mat &input, const std::vector\< size\_t \> &rowsToRemove, arma::mat &output)\
 *Remove a certain set of rows in a matrix while copying to a second matrix.*  void **mlpack::math::VectorPower** (arma::vec &vec, const double power)\
 *Auxiliary function to raise vector elements to a specific power.*  void **mlpack::math::WhitenUsingEig** (const arma::mat &x, arma::mat &xWhitened, arma::mat &whiteningMatrix)\
 *Whitens a matrix using the eigendecomposition of the covariance matrix.*  void **mlpack::math::WhitenUsingSVD** (const arma::mat &x, arma::mat &xWhitened, arma::mat &whiteningMatrix)\
 *Whitens a matrix using the singular value decomposition of the covariance matrix.*

## Detailed Description

**Author:**

Nishant Mehta

Linear algebra utilities.

This file is part of MLPACK 1.0.10.

MLPACK is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

MLPACK is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details (LICENSE.txt).

You should have received a copy of the GNU General Public License along with MLPACK. If not, see http://www.gnu.org/licenses/.

Definition in file **lin\_alg.hpp**.

## Author

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