long_to_matrix {proBatch} | R Documentation

## Long to wide conversion

### Description

Convert from a long data frame representation to a wide matrix representation

### Usage

    long_to_matrix(df_long, feature_id_col = "peptide_group_label",
      measure_col = "Intensity", sample_id_col = "FullRunName")

### Arguments

`df_long` | data frame where each row is a single feature in a single sample. It minimally has a `sample_id_col`, a `feature_id_col` and a `measure_col`, but usually also an `m_score` (in OpenSWATH output result file)
`feature_id_col` | name of the column with feature/gene/peptide/protein ID used in the long format representation `df_long`. In the wide formatted representation `data_matrix` this corresponds to the row names.
`measure_col` | if `df_long` is among the parameters, it is the column with expression/abundance/intensity; otherwise, it is used internally for consistency
`sample_id_col` | name of the column in sample_annotation file, where the filenames (colnames of the data matrix are found)

### Value

`data_matrix` (proBatch) like matrix (features in rows, samples in columns)

### See Also

Other matrix manipulation functions: `matrix_to_long`

### Examples

    proteome_matrix <- long_to_matrix(example_proteome)

[Package proBatch version 1.0.0 Index]