I have microarray data to analyze with 3 factors: Genotype (wt, mut), Treatment (C, T), and Organ (s, r), each in 3 replicates. I found the guide for limma, I am just confused about how to "makeContrasts" to get all levels of main and interaction effect.
If this question is redundant, please provide the link, I could not find it.
Many thanks, Dan
Code should be placed in three backticks as shown below
# include your problematic code here with any corresponding output # please also include the results of running the following in an R session sessionInfo( )