fixed small bug

remeshing_1D.py

@@ -8,7 +8,7 @@ print(mesh.coordinates()[:, 0])
 
 
 def refine_mesh(mesh):
 def refine_mesh(mesh):
     cell_markers = df.MeshFunction("bool", mesh, mesh.topology().dim())
     cell_markers = df.MeshFunction("bool", mesh, mesh.topology().dim())
-
+    cell_markers.set_all(False)
     for cell in df.cells(mesh):
     for cell in df.cells(mesh):
         if cell.h()>0.3:
         if cell.h()>0.3:
             cell_markers[cell] = True
             cell_markers[cell] = True