[nengo-user] trouble generating scripts/simpleNode question

[Terry Stewart]

Hi Brian,

We're still working on fixing the generate script bug you pointed out,
but in the meantime I thought I'd take a quick look at the second
question.  :)

You're right it's not clear how to do this...  the trick is that you
have to give the origin on your SimpleNode a particular name "X", and
then it works fine.  Here's an example:

-----------------------------
import nef
import nps

net=nef.Network('Basal Ganglia')

class MyNode(nef.SimpleNode):
    def origin_X(self):    # this is what the origin must be called
        return [0.5, 0.9, 0.5, 0.5, 0.5]

input = net.add(MyNode('input'))

net.make('output',1,3,mode='direct')

nps.basalganglia.make_basal_ganglia(net,'input','output', 3, same_neurons=False,
    neurons=50)

net.add_to_nengo()
net.view()
-------------------------

let me know if that works for you!

Terry

On Thu, May 29, 2014 at 1:37 PM, Brian Krainer <bkrainer731 at gmail.com> wrote:
> Hello,
>
> I've got 2 questions:
>
> 1)I'm trying to use 'generate script' with models that I've made using the
> GUI. Sometimes it works fine, but other times I get the error:
>
> "Could not perform action: java.lang.ClassCastException: java.lang.Integer
> cannot be cast to java.lang.Double"
>
> I thought maybe there was something wrong with the way I was connecting
> things in the network, so I loaded one of the examples from the 'demo'
> directory (basalganglia.py) and tried to generate the script. This gave me
> the same error. Why is this the case?
>
> 2) Is it possible to use a simpleNode class to define a function that is
> input to the Basal Ganglia network? I can't seem to figure out the correct
> syntax if it is possible.
>
> Thanks,
> Brian
>
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