Bar plot example

bar_plot_test.py

import nengo
import numpy as np

fsp_res = 4

with nengo.Network() as model:

    def in_func(t, x):
        idx = int((t * 100) % fsp_res)
        val = np.ones(fsp_res)
        val[idx:idx+1] = 0.5
        return val*x

    in_nd = nengo.Node(in_func, size_in=1)
    mult = nengo.Node([1])
    nengo.Connection(mult, in_nd)

    bar_x = np.linspace(0, 50, fsp_res)
    def out_func(t, x):
        line_width = 2
        bar_graph = '''<svg width="100%" height="100%" viewbox="0 0 200 100">'''
        for ii in range(fsp_res):
            bar_graph += '''<line x1="{0}" y1="0" x2="{0}" y2="{1}" stroke-width="{2}" style="stroke:black"/>'''.format(
                    bar_x[ii] * line_width, x[ii]*100, line_width)
        out_func._nengo_html_ = bar_graph

    out_nd = nengo.Node(out_func, size_in=fsp_res)

    val_nd = nengo.Node(size_in=fsp_res)

    nengo.Connection(in_nd, out_nd, synapse=None)
    nengo.Connection(in_nd, val_nd, synapse=None)