Create a population of iaf_psc_alpha neurons on a 4x3 grid

BCCN Tutorial @ CNS*09 Hans Ekkehard Plesser, UMB

import nest
import matplotlib.pyplot as plt

nest.ResetKernel()

l1 = nest.Create('iaf_psc_alpha',
                 positions=nest.spatial.grid(shape=[4, 3], extent=[2., 1.5]))

nest.PrintNodes()

nest.PlotLayer(l1, nodesize=50)

# beautify
plt.axis([-1.0, 1.0, -0.75, 0.75])
plt.axes().set_aspect('equal', 'box')
plt.axes().set_xticks((-0.75, -0.25, 0.25, 0.75))
plt.axes().set_yticks((-0.5, 0, 0.5))
plt.grid(True)
plt.xlabel('4 Columns, Extent: 1.5')
plt.ylabel('2 Rows, Extent: 1.0')

plt.show()

# plt.savefig('grid_iaf.png')