I cannot get pyplot to produce "cropped" images, that is, get rid of the grey left and right borders, as it is, it is not an accurate representation of the sound waveform : This sound file has no silence before and after.
My code :
import gtk
from matplotlib.figure import Figure
from numpy import arange, sin, pi
import scipy.io.wavfile as wavfile
from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg as FigureCanvas
win = gtk.Window()
win.connect("destroy", lambda x: gtk.main_quit())
win.set_default_size(400,300)
win.set_title("Cropping figure")
rate, data = wavfile.read(open('/home/px/gare_du_nord-catchlak.wav', 'r'))
f = Figure()
a = f.add_subplot(111, axisbg=(0.1843, 0.3098, 0.3098))
a.plot(range(len(data)),data, color="OrangeRed", linewidth=0.5, linestyle="-")
a.axis('off')
a.autoscale_view('tight')
canvas = FigureCanvas(f) # a gtk.DrawingArea
win.add(canvas)
win.show_all()
gtk.main()
