I have a question. I want to plot 2by2 or 1by1 graphs per page instead of 15 graphs on one page.
this is my code :
plot =   combine_core1_and_2_and_average[]%>%
    ggplot()+
    geom_boxplot(aes(x =merge_data_core1.depth, y = average,col = geno_pheno,))+
    ggtitle(title_name)+
    theme(legend.title = element_blank())+
    xlab("Depth (cm)")+
    ylab(title_name)+
    facet_wrap(.~cluster)
