diff --git a/envi/envi.h b/envi/envi.h
index 8118d7d..86224a8 100644
--- a/envi/envi.h
+++ b/envi/envi.h
@@ -271,6 +271,11 @@ public:
 	
 	}
 
+	//get the mask
+	bool mask(unsigned char* mask, mask_band, threshold)	{
+
+	}
+
 	bool close(){
 		if(header.interleave == envi_header::BSQ){
 			if(header.data_type ==envi_header::float32)
--
libgit2 0.21.4