matplotlib example mpl prof (snippet)

Python matplotlib example 'mpl prof'

Functions in program:

• def line_collection(t, spikes):

Modules used in program:

• import time
• import matplotlib.pyplot as plt
• import numpy as np

python mpl prof

Python matplotlib example: mpl prof

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.collections import LineCollection

def line_collection(t, spikes):

    ax = plt.subplot(111)
    ts, ns = spikes.shape
    segs = np.zeros((ns, ts, 2), np.float32)
    segs[:, :, 1] = spikes.T
    segs[:, :, 0] = t[:, None].T

    line_segments = LineCollection(segs)

    ax.add_collection(line_segments)

    ax.set_xlim(t.min(), t.max())
    ax.set_ylim(spikes.min(), spikes.max())




t = np.linspace(0, np.pi*2, 34)
y = np.sin(t) 
spikes = y[:, None]*np.random.rand(1,20000)

import time

start1 = time.time()
#plt.plot(t, spikes, '-')
line_collection(t, spikes)
start2 = time.time()
plt.savefig('plot_perf.png')
stop = time.time()
print('Plotting:', -start1+start2 )
print('Exporting:', -start2+stop)
print('total:', -start1+stop)

plt.show()

Python links

• Learn Python: https://pythonbasics.org/
• Python Tutorial: https://pythonprogramminglanguage.com