Rcpp_matrixVectorPow_byRow

C++ Function Reference

1 Signature

Eigen::MatrixXd BigDataStatMeth::Rcpp_matrixVectorPow_byRow(Eigen::MatrixXd X, Eigen::VectorXd v)

2 Description

Matrix-vector power by rows.

3 Parameters

X (Eigen::MatrixXd): Input matrix
v (Eigen::VectorXd): Input vector

4 Returns

Result of row-wise power

5 Details

Divides each row of a matrix by a vector element-wise.

6 Caller Graph

7 Source Code

Implementation

File: inst/include/hdf5Algebra/vectormatrix.hpp • Lines 105-112

inline Eigen::MatrixXd Rcpp_matrixVectorPow_byRow(Eigen::MatrixXd X, Eigen::VectorXd v) {
    for (int col = 0; col < X.cols(); ++col) {
        X.col(col) = X.col(col).array().unaryExpr(
            [&v, col](double x) { return std::pow(x, v(col)); }
        );
    }
    return(X);
}

8 Usage Example

#include "BigDataStatMeth.hpp"

// Example usage
auto result = Rcpp_matrixVectorPow_byRow(...);

---
title: "Rcpp_matrixVectorPow_byRow"
subtitle: "C++ Function Reference"
---

## Signature

```cpp
Eigen::MatrixXd BigDataStatMeth::Rcpp_matrixVectorPow_byRow(Eigen::MatrixXd X, Eigen::VectorXd v)
```

## Description

Matrix-vector power by rows.

## Parameters

- `X` (`Eigen::MatrixXd`): Input matrix
- `v` (`Eigen::VectorXd`): Input vector

## Returns

Result of row-wise power

## Details

Divides each row of a matrix by a vector element-wise.

## Caller Graph

::: {.diagram-section}
<object type="image/svg+xml" data="images/namespace_big_data_stat_meth_ae25c7bc45e1fdf9ff7c7f472f98157f4_icgraph.svg" class="class-diagram">
  <img src="images/namespace_big_data_stat_meth_ae25c7bc45e1fdf9ff7c7f472f98157f4_icgraph.svg" alt="Function dependencies"/>
</object>
:::

## Source Code

::: {.callout-note collapse="true"}
### Implementation

**File:** `inst/include/hdf5Algebra/vectormatrix.hpp` • **Lines 105-112**

```cpp
inline Eigen::MatrixXd Rcpp_matrixVectorPow_byRow(Eigen::MatrixXd X, Eigen::VectorXd v) {
    for (int col = 0; col < X.cols(); ++col) {
        X.col(col) = X.col(col).array().unaryExpr(
            [&v, col](double x) { return std::pow(x, v(col)); }
        );
    }
    return(X);
}
```
:::

## Usage Example

```cpp
#include "BigDataStatMeth.hpp"

// Example usage
auto result = Rcpp_matrixVectorPow_byRow(...);
```