# Example: morphotest

> Note

> You can launch an interactive, editable version of this example without installing any local files using the Binder service (although note that at some times this may be slow or fail to open):

Demonstrate the usage of the `Morphology` object.

    from brian2 import *

    # Morphology
    morpho = Soma(30*um)
    morpho.L = Cylinder(diameter=1*um, length=100*um, n=5)
    morpho.LL = Cylinder(diameter=1*um, length=20*um, n=2)
    morpho.R = Cylinder(diameter=1*um, length=100*um, n=5)

    # Passive channels
    gL = 1e-4*siemens/cm**2
    EL = -70*mV
    eqs = '''
    Im = gL * (EL-v) : amp/meter**2
    '''

    neuron = SpatialNeuron(morphology=morpho, model=eqs,
                           Cm=1*uF/cm**2, Ri=100*ohm*cm, method='exponential_euler')
    neuron.v = arange(0, 13)*volt

    print(neuron.v)
    print(neuron.L.v)
    print(neuron.LL.v)
    print(neuron.L.main.v)