When the dataset is loaded with genes specified by their ensembl ids, this function maps these ids to their associated gene names.
| biomart_dataset | a character string specifying the BioMart dataset to use for the conversion. The list of available datasets can be listed with listDatasets from the "biomaRt" package. Default to 'mmusculus_gene_ensembl'. |
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| gene_ids_mapping_file | a character string. If NULL, the conversion is performed from a gene ids/names mapping obtained using the biomaRt package (Default). This requires an internet connection. If not NULL, this argument must specify the location of a csv file with header containing the ensembl gene ids in the first column and the gene names in the second column. |