removeColumn

C++ Function Reference

1 Signature

void BigDataStatMeth::removeColumn(Eigen::MatrixXd &matrix, unsigned int colToRemove)

2 Description

Removes a column from an Eigen matrix.

3 Parameters

matrix (Eigen::MatrixXd &): Reference to matrix to modify
colToRemove (unsigned int): Index of column to remove

4 Details

matrixReference to matrix to modify colToRemoveIndex of column to remove Implementation details:Shifts remaining columns leftResizes matrix to remove last column

5 Caller Graph

6 Source Code

Implementation

File: inst/include/hdf5Utilities/hdf5Utilities.hpp • Lines 369-378

inline void removeColumn(Eigen::MatrixXd& matrix, unsigned int colToRemove)
    {
        unsigned int numRows = matrix.rows();
        unsigned int numCols = matrix.cols()-1;
        
        if( colToRemove < numCols )
            matrix.block(0,colToRemove,numRows,numCols-colToRemove) = matrix.rightCols(numCols-colToRemove).eval();
        
        matrix.conservativeResize(numRows,numCols);
    }

7 Usage Example

#include "BigDataStatMeth.hpp"

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

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

## Signature

```cpp
void BigDataStatMeth::removeColumn(Eigen::MatrixXd &matrix, unsigned int colToRemove)
```

## Description

Removes a column from an Eigen matrix.

## Parameters

- `matrix` (`Eigen::MatrixXd &`): Reference to matrix to modify
- `colToRemove` (`unsigned int`): Index of column to remove

## Details

matrixReference to matrix to modify colToRemoveIndex of column to remove
Implementation details:Shifts remaining columns leftResizes matrix to remove last column

## Caller Graph

::: {.diagram-section}
<object type="image/svg+xml" data="images/namespace_big_data_stat_meth_a962551a78d986ff03e179f2d6df2af52_icgraph.svg" class="class-diagram">
  <img src="images/namespace_big_data_stat_meth_a962551a78d986ff03e179f2d6df2af52_icgraph.svg" alt="Function dependencies"/>
</object>
:::

## Source Code

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

**File:** `inst/include/hdf5Utilities/hdf5Utilities.hpp` • **Lines 369-378**

```cpp
inline void removeColumn(Eigen::MatrixXd& matrix, unsigned int colToRemove)
    {
        unsigned int numRows = matrix.rows();
        unsigned int numCols = matrix.cols()-1;
        
        if( colToRemove < numCols )
            matrix.block(0,colToRemove,numRows,numCols-colToRemove) = matrix.rightCols(numCols-colToRemove).eval();
        
        matrix.conservativeResize(numRows,numCols);
    }
```
:::

## Usage Example

```cpp
#include "BigDataStatMeth.hpp"

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