diff --git a/R/ggheatmap.R b/R/ggheatmap.R
index 35ebcb3..72d0b94 100644
--- a/R/ggheatmap.R
+++ b/R/ggheatmap.R
@@ -1,15 +1,20 @@
-ggheatmap<-function(df, x=NULL, y=NULL, value=NULL, grouping="mean"){
+ggheatmap<-function(df, x=NULL, y=NULL, value=NULL, grouping="mean", exclude_group=NULL){
   if (is.null(x)){x=colnames(df)[1]}
   if (is.null(y)){y=colnames(df)[2]}
   if (is.null(value)){value=colnames(df)[3]}
 
   df<-rename(df, "VarX"=all_of(x), "VarY"=all_of(y), "Value"=all_of(value))
-
+  
+  if (!is.null(exclude_group)){
+    df<-df %>% group_by(VarX,VarY)
+  }else{
+    df<-df %>% group_by(VarX,VarY,all_of(exclude_group))
+  }
   if (grouping == "mean"){
-    df<-df %>% group_by(VarX,VarY) %>% summarise(Value=mean(Value)) %>% ungroup
+    df<-df %>% summarise(Value=mean(Value)) %>% ungroup
   }
   if (grouping == "median"){
-    df<-df %>% group_by(VarX,VarY) %>% summarise(Value=median(Value)) %>% ungroup
+    df<-df %>% summarise(Value=median(Value)) %>% ungroup
   }
 
   order<-clustsort(df %>% spread(VarY,Value) %>% as.data.frame)