www.neuron.yale.edu

I'm able to convert a hoc vector to a numpy array using:
But I am unable to convert a numpy array back to hoc. The following code gives me the error:

Traceback (most recent call last):
File "<string>", line 1, in <module>
NameError: name 'vec' is not defined
0
I also tried using the methods presented by Hines et al. on page 7 of NEURON and Python:
which yielded the following error:
Traceback (most recent call last):
File "<string>", line 1, in <module>
AttributeError: 'module' object has no attribute 'Vector'
0

Any thoughts on this? I'm running Neuron version 7.3 with python embedded as an alternative interpreter to hoc.

nrnpython("vec - vec.from_python(a)")

vec on the right side needs to be h.vec since vec from earllier statements was declared in the hoc world. The above will create a 'vec' reference in the python world.

That solved the problem. Thank you!