Not sure what region[:] is supposed to achieve. You are creating a copy
with the same name, so you are over-riding the original variable.
Hi there
I have a function where I want to display an image, get the user to
zoom in on a region of interest, and then return the axes limits.
But the problem is, I can only use it once, the second time it gets
called in a script the figure doesn't appear. I know this is to do
with show() not being supposed to be used multiple times, but I don't
know what I should be doing instead ... any tips? (I'm still new to
python btw)
Also, if there's a better (more pythonic way) to do what I'm doing, I
would appreciate your input. I'm not sure if what I'm doing with the
region variable is dodgy or not.
Currently, I'm doing this:
from pylab import *
def getroi(im):
imshow(im)
title('Zoom in to region of interest, then press a key')
region = array([0, 0, 0, 0]) # Placeholder values
def keypressed(event):
region[:] = [round(i) for i in gca().axis()]
close(gcf())
# Connect keypressed to event handler
connect('key_press_event', keypressed)
show()
return region
thanks,
Richard
--
Richard Brown
Ph.D. Candidate
Dept. of Mechanical Engineering
University of Canterbury, NZ
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