@@ -302,6 +302,13 @@ def forced_response(sys, T=None, U=0., X0=0., transpose=False,
302302"return_x specified for a transfer function system. Internal "
303303"conversion to state space used; results may meaningless." )
304304
305+ # If we are passed a transfer function and X0 is non-zero, warn the user
306+ if isinstance (sys ,TransferFunction )and np .any (X0 != 0 ):
307+ warnings .warn (
308+ "Non-zero initial condition given for transfer function system. "
309+ "Internal conversion to state space used; may not be consistent "
310+ "with given X0." )
311+
305312sys = _convert_to_statespace (sys )
306313A ,B ,C ,D = np .asarray (sys .A ),np .asarray (sys .B ),np .asarray (sys .C ), \
307314np .asarray (sys .D )
@@ -358,12 +365,6 @@ def forced_response(sys, T=None, U=0., X0=0., transpose=False,
358365X0 = _check_convert_array (X0 , [(n_states ,), (n_states ,1 )],
359366'Parameter ``X0``: ' ,squeeze = True )
360367
361- # If we are passed a transfer function and X0 is non-zero, warn the user
362- if isinstance (sys ,TransferFunction )and np .any (X0 != 0 ):
363- warnings .warn (
364- "Non-zero initial condition given for transfer function system. "
365- "Internal conversion to state space used; may not be consistent "
366- "with given X0." )
367368
368369xout = np .zeros ((n_states ,n_steps ))
369370xout [:,0 ]= X0