[SciPy-User] help: scipy.ode set_integrator dopri5 or dop853

Issa Karambal issa@aims.ac...
Mon Dec 17 18:12:10 CST 2012

Hi all
I am trying to integrate a simple ode which is succesfull when calling
'vode' integrator. However,
with  'dopri5' or 'dop853' as integrator, I have the following error:
create_cb_arglist: Failed to build argument list (siz) with enough
arguments (tot-opt) required by user-supplied function (siz,tot,opt=2,3,0).
Traceback (most recent call last):
  File "schro1.py", line 45, in <module>
    print Evans(3)
  File "schro1.py", line 24, in Evans
  File "/usr/lib/python2.7/dist-packages/scipy/integrate/ode.py", line 326,
in integrate
  File "/usr/lib/python2.7/dist-packages/scipy/integrate/ode.py", line 749,
in run
    x,y,iwork,idid = self.runner(*((f,t0,y0,t1) + tuple(self.call_args)))
_dop.error: failed in processing argument list for call-back fcn.

I do not understand the above error, so any help is more than welcome.


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