.. currentmodule:: brian

.. index::
   pair: example usage; run
   pair: example usage; SpikeGeneratorGroup
   pair: example usage; raster_plot
   pair: example usage; clear
   pair: example usage; PoissonGroup
   pair: example usage; reinit_default_clock
   pair: example usage; AERSpikeMonitor
   pair: example usage; SpikeMonitor
   pair: example usage; load_aer

.. _example-misc_spikes_io:

Example: spikes_io (misc)
=========================

This script demonstrates how to save/load spikes in AER format from inside Brian.

::

    from brian import *
    
    ####################### SAVING #########################
    
    # First we need to generate some spikes
    N = 1000
    g = PoissonGroup(N, 200*Hz)
    
    # And set up a monitor to record those spikes to the disk
    Maer = AERSpikeMonitor(g, './dummy.aedat')
    
    # Now we can run
    run(100*ms)
    
    # This line executed automatically when the script ends, but here we
    # need to close the file because we re-use it from within the same script
    Maer.close()
    
    
    clear(all = True)
    reinit_default_clock()
    ####################### LOADING ########################
    
    # Now we can re-load the spikes
    addr, timestamps = load_aer('./dummy.aedat')
    
    # Feed them to a SpikeGeneratorGroup
    group = SpikeGeneratorGroup(N, (addr, timestamps))
    
    # The group can now be used as any other, here we choose to monitor
    # the spikes
    newM = SpikeMonitor(group, record = True)
    
    run(100*ms)
    
    # And plot the result
    raster_plot(newM)
    show()