utils

func DenseToMatrix ¶

func DenseToMatrix(d *mat.Dense) types.Matrix

DenseToMatrix converts a gonum Dense matrix to types.Matrix

func FilterMatrix ¶

func FilterMatrix(data [][]float64, excludedRows, excludedColumns []int) ([][]float64, error)

FilterMatrix removes specified rows and columns from a matrix

func FilterStringSlice ¶

func FilterStringSlice(items []string, excludedIndices []int) ([]string, error)

FilterStringSlice removes elements at specified indices from a string slice

func MatrixToDense ¶

func MatrixToDense(m types.Matrix) *mat.Dense

MatrixToDense converts a types.Matrix to a gonum Dense matrix

func ParseRanges ¶

func ParseRanges(input string) ([]int, error)

ParseRanges parses a comma-separated string of indices and ranges into a slice of integers. Examples:

• "1,3,5" returns [1, 3, 5]
• "1-3,5" returns [1, 2, 3, 5]
• "1,3-5,7" returns [1, 3, 4, 5, 7]

Note: Input indices are 1-based (human-friendly), output indices are 0-based

func ValidateFilePath ¶

func ValidateFilePath(path string) error

ValidateFilePath checks if a file path is safe to use It prevents directory traversal attacks and ensures the path is clean

func ValidateOutputPath ¶

func ValidateOutputPath(path string) error

ValidateOutputPath ensures an output path is safe to write to