minor adj: safe ng->scipy if mat not regular

_tools/algebra/scipySparseFromNgMatrix.py

@@ -7,7 +7,7 @@ def ScipySparseFromNgMatrix(a):
   import scipy.sparse as sp
 
   rows, cols, vals = a.mat.COO()
-  A = sp.csr_matrix( (vals.NumPy(), (rows, cols) ) )
+  A = sp.csr_matrix( (vals.NumPy(), (rows, cols) ), shape=(a.mat.height, a.mat.width) )
   return A