rnalysis.filtering.CountFilter.differential_expression_deseq2

CountFilter.differential_expression_deseq2(design_matrix: Union[str, Path], comparisons: Iterable[Tuple[str, str, str]], r_installation_folder: Union[str, Path, Literal['auto']] = 'auto', output_folder: Optional[Union[str, Path]] = None) → Tuple[DESeqFilter, ...]

Run differential expression analysis on the count matrix using the DESeq2 algorithm. The count matrix you are analyzing should be unnormalized (meaning, raw read counts). The analysis will be based on a design matrix supplied by the user. The design matrix should contain at least two columns: the first column contains all the sample names, and each of the following columns contains an experimental design factor (e.g. ‘condition’, ‘replicate’, etc). (see the User Guide and Tutorial for a complete example). The analysis formula will contain all the factors in the design matrix. To run this function, a version of R must be installed.

Parameters

  • design_matrix (str or Path) – path to a csv file containing the experiment’s design matrix. The design matrix should contain at least two columns: the first column contains all the sample names, and each of the following columns contains an experimental design factor (e.g. ‘condition’, ‘replicate’, etc). (see the User Guide and Tutorial for a complete example). The analysis formula will contain all the factors in the design matrix.

  • comparisons (Iterable of tuple(factor, numerator_value, denominator_value)) – specifies what comparisons to build results tables out of. each individual comparison should be a tuple with exactly three elements: the name of a factor in the design formula, the name of the numerator level for the fold change, and the name of the denominator level for the fold change.

  • r_installation_folder (str, Path, or 'auto' (default='auto')) – Path to the installation folder of R. For example: ‘C:/Program Files/R/R-4.2.1’

  • output_folder (str, Path, or None) – Path to a folder in which the analysis results, as well as the log files and R script used to generate them, will be saved. if output_folder is None, the results will not be saved to a specified directory.

Returns

a tuple of DESeqFilter objects, one for each comparison