Chapter 3 Formateo de datos

Converitir a factor los valores a utilizar para el análisis estadístico.

## Convertir a factor las categorías que puedan ser dummy variables
rse_gene_SRP162774$sra_attribute.drug_treatment <- factor(ifelse(rse_gene_SRP162774$sra_attribute.drug_treatment == 'Placebo', 'Placebo', 'Ibuprofen'))
rse_gene_SRP162774$sra_attribute.gender <- factor(rse_gene_SRP162774$sra_attribute.gender)

## Resumen de las variables de interés
summary(as.data.frame(colData(rse_gene_SRP162774)[
    ,
    grepl("^sra_attribute.[cell_line|source_name|treatment]", colnames(colData(rse_gene_SRP162774)))
]))

##  sra_attribute.cell_type sra_attribute.library_barcode
##  Length:911              Length:911                   
##  Class :character        Class :character             
##  Mode  :character        Mode  :character             
##  sra_attribute.response_group sra_attribute.source_name sra_attribute.subject
##  Length:911                   Length:911                Length:911           
##  Class :character             Class :character          Class :character     
##  Mode  :character             Mode  :character          Mode  :character     
##  sra_attribute.timepoint
##  Length:911             
##  Class :character       
##  Mode  :character