The following code
plt.figure(1)
plt.subplot(211)
plt.axis([0,100, 95, 4000])
plt.plot(array1,array2,'r')
plt.ylabel("label")
plt.xlabel("label")
plt.subplot(212)
plt.specgram(array3)
plt.show()
creates two nice diagrams. But how do you update its content without having to close the window?
I would need to create the window in one thread and, while a variable is being updated in the main code, the window is being updated using the variable.
How would you do it?
There are a few options: one is the great examples using mpl examples. the second is writing the loops your self so you can understand what is going on. Here is a simple example using the pylab.draw() function instead of show(), it is not fancy, but it will allow you to understand the basic stuff:
import pylab
import time
pylab.ion() # animation on
# Note the comma after line. This is placed here because
# plot returns a list of lines that are drawn.
line, = pylab.plot(0,1,'ro',markersize=6)
pylab.axis([0,1,0,1])
line.set_xdata([1,2,3]) # update the data
line.set_ydata([1,2,3])
pylab.draw() # draw the points again
time.sleep(6)
line1, = pylab.plot([4],[5],'g*',markersize=8)
pylab.draw()
for i in range(10):
line.set_xdata([1,2,3]) # update the data
line.set_ydata([1,2,3])
pylab.draw() # draw the points again
time.sleep(1)
print "done up there"
line2, = pylab.plot(3,2,'b^',markersize=6)
pylab.draw()
time.sleep(20)
I hope this helps.
