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slider_demo.py

from pylab import *
from matplotlib.widgets import Slider, Button, RadioButtons

ax = subplot(111)
subplots_adjust(left=0.25, bottom=0.25)
t = arange(0.0, 1.0, 0.001)
a0 = 5
f0 = 3
s = a0*sin(2*pi*f0*t)
l, = plot(t,s, lw=2, color='red')
axis([0, 1, -10, 10])

axcolor = 'lightgoldenrodyellow'
axfreq = axes([0.25, 0.1, 0.65, 0.03], axisbg=axcolor)
axamp  = axes([0.25, 0.15, 0.65, 0.03], axisbg=axcolor)

sfreq = Slider(axfreq, 'Freq', 0.1, 30.0, valinit=f0)
samp = Slider(axamp, 'Amp', 0.1, 10.0, valinit=a0)

def update(val):
    amp = samp.val
    freq = sfreq.val
    l.set_ydata(amp*sin(2*pi*freq*t))
    draw()
sfreq.on_changed(update)
samp.on_changed(update)

resetax = axes([0.8, 0.025, 0.1, 0.04])
button = Button(resetax, 'Reset', color=axcolor, hovercolor='0.975')
def reset(event):
    sfreq.reset()
    samp.reset()
button.on_clicked(reset)

rax = axes([0.025, 0.5, 0.15, 0.15], axisbg=axcolor)
radio = RadioButtons(rax, ('red', 'blue', 'green'), active=0)
def colorfunc(label):
    l.set_color(label)
    draw()
radio.on_clicked(colorfunc)

show()


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