#3: correlation heatmap (+hierarchical clustering)

cor_raw<-cor(log_raw_ex)
library(pheatmap)
library(ggplot2)
group2<-c (paste0("collagen",1:2) ,paste0("collagen and cisplatin",1:2),paste0("non",
 "non",1:4))
group2
pheatmap(cor_raw ,
         cellwidth=20,
         cellheight=20,
         labels_row=group2,
         labels_col=group2,
         color="blue2","yellow","burlywood3", 
         clustering_distance_cols ="binary",
         clustering_distance_rows ="binary")



error
in pheatmap ( cellwidth=20,         cellheight=20,         labels_row=group2,         labels_col=group2,

could not find function "pheatmap"