bugfix 6a2492d

KrishnaswamyLab · Jun 13, 2018 · 143317c · 143317c
1 parent 6a2492d
commit 143317c
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/graphtools/graphs.py b/graphtools/graphs.py
@@ -689,8 +689,9 @@ def build_kernel(self):
         elif self.precomputed is "adjacency":
             # need to set diagonal to one to make it an affinity matrix
             K = self.data_nu
-            if not (isinstance(K, sparse.dok_matrix) or
-                    isinstance(K, sparse.lil_matrix)):
+            if sparse.issparse(K) and \
+                not (isinstance(K, sparse.dok_matrix) or
+                     isinstance(K, sparse.lil_matrix)):
                 K = K.tolil()
             K = set_diagonal(K, 1)
         else: