limma_value | R Documentation |
Use the limma or DESeq2 package to perform DEG analysis with the specified model design. Core function for the DEG panel of iDEP.
limma_value(
data_file_format,
counts_deg_method,
raw_counts,
limma_p_val,
limma_fc,
select_model_comprions,
sample_info,
select_factors_model,
select_interactions,
select_block_factors_model,
factor_reference_levels,
processed_data,
counts_log_start,
p_vals,
threshold_wald_test = FALSE,
independent_filtering = TRUE,
descr = ""
)
data_file_format |
Type of gene data being examined |
counts_deg_method |
The method or package being used for the DEG analysis |
raw_counts |
The matrix of counts before processing for gene expression data |
limma_p_val |
Significant p-value to use for expressed genes |
limma_fc |
Minimum fold-change cutoff for the DEG analysis |
select_model_comprions |
Selected comparisons to analyze in the DEG analysis |
sample_info |
Experiment file information for grouping |
select_factors_model |
The selected factors for the model expression |
select_interactions |
The interaction terms being used in the model design |
select_block_factors_model |
The selected factors for batch effect |
factor_reference_levels |
Vector of reference levels to use for the selected factors |
processed_data |
Data that has been through the pre-processing |
counts_log_start |
The constant added to the log transformation from pre-processing |
p_vals |
The vector of p-vals calculated in pre-process for significant expression |
threshold_wald_test |
whether to use threshold-based Wald test to test null hypothesis that the absolute value of fold-change is bigger than a value |
independent_filtering |
whether or not to conduct independent filtering in DESeq2 results function. |
List with the results of the DEG analysis. When the function is successful there are four entries in the list. "results" is a matrix with the same dimensions as the processed data. The entries in "results" are c(-1, 0, 1) for (negative fold change, no significant change, positive fold change) respectively. The second entry is "comparisons" and is a character vector of the different comparisons that were analyzed in the function. Third is "exp_type" and details the model expression that was used for the DEG analysis. Lastly is "top_genes" which is itself a list. The "top_genes" list has an entry for each comparison. Each entry is a data frame with two columns. One column is the calculated fold change for the comparison and the other is the adjusted p-value for the fold change calculation.
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