Fixed RTW_low which was doing the same as RTW_high

metrics.py

@@ -76,7 +76,7 @@ def RTW_low(x,k=0.2,ax=None):
     x2=np.sort(x,axis=ax)    
     x2=x2-np.take(x2,indices = [0],axis=ax)#make it possitive
     '''here i turn it around'''  
-    x2=-x2
+    x2=np.flip(x2,axis=ax)
     x2=x2-np.take(x2,indices = [0],axis=ax)#make it possitive
     if ax==None :
      #  print('none axis')