select_genes {CEMiTool} | R Documentation

## Select genes based on variance

### Description

Select genes based on variance

### Usage

    select_genes(expr, n_genes, filter_pval = 0.1)

### Arguments

`expr` | A data.frame containing expression values
`n_genes` | (Optional) Number of genes to be selected
`filter_pval` | P-value cutoff for gene selection

### Value

A vector containing the names of selected genes

### Examples

    # Get example expression data
    data(expr0)
    # Filter genes
    expr_f <- filter_genes(expr0)
    # Check selected genes
    expr_f[1:5, 1:5]
    # Filter genes and apply variance stabilizing transformation
    expr_f2 <- filter_genes(expr0, apply_vst=TRUE)
    # Check results
    expr_f2[1:5, 1:5]
    # Selected genes
    selected <- select_genes(expr_f2)
    # Get data.frame with only selected genes
    expr_s <- expr_f2[selected, ]
    # Check results
    expr_s[1:5, 1:5]

[Package CEMiTool version 1.18.1 Index]