Normalization data by the median value of each batch
batch_norm( object, feature_platform = "PLATFORM", QC_ID_pattern = "MTRX", test = FALSE, verbose = TRUE )
A Metabolite object. In the feature annotation slot `feature`, a platform column should be provided for metabolite measurement platform (eg. `PLATFORM`). The values in the `PLATFORM` column (eg. `Neg`, `Polar`, `Pos Early`, and `Pos Late`) are column names in the sample annotation `sample` to determine the batches of samples.
The column name of feature platform for metabolite measurements (eg. `PLATFORM`).
A character pattern to determine QC samples. Default value: "MTRX".
test the function for the first 20 columns.
print log information.