Tony, I found the .connect_event method of the ImageViewer class just before I got the reply from you, and it roughly works. I say roughly because in the application there are some sliders that I added (not a part of the built-in plugins), and what I see that I see an image update only after I touch the sliders. In the linetool, however, the response is immediate. Code snippet: class Cimage: . . . def create_window(self): self.view = viewer.ImageViewer(self.rgb_image) plugin = OverlayPlugin(image_filter=self.image_update) plugin += Slider('gamma', 1.0, 3.0, value=self.gamma, orientation='vertical') plugin += Slider('mat mix', 0.0, 1.0, value=0.0, update_on='move', orientation='vertical') plugin += Slider('wb mix', 0.0, 1.0, value=0.0, update_on='move', orientation='horizontal') self.view += plugin self.view.connect_event('key_press_event', self.key_press) self.view.setWindowTitle(self.recname) self.view.show() . . . in the key_press method execution chain I have self.view.image = new_image so the image is updated, but it does not trigger a display update. Steve, Here is your code after some typos correction: #! /usr/bin/python from __future__ import print_function from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg import matplotlib.pyplot as plt from skimage import data class MyCanvas(FigureCanvasQTAgg): def mousePressEvent(self, event): #pass print('press') self.image = self.image[::-1] def main(): image = data.camera() f, ax = plt.subplots() f.canvas = MyCanvas(f) ax.imshow(image, interpolation='nearest') h, w = image.shape plt.show() if __name__ == '__main__': main() Running it I see that the method mousePressEvent is not being called I'll be happy to know if there is something to follow and build an application based on the viewer module. Thank you both very much Nadav 2013/12/23 Steven Silvester <steven.silvester@gmail.com>:

Nadav,

The canvas itself is a matplotlib.backends.backend_qt4agg.FigureCanvasQTAgg. If you wanted, you could subclass that class and provide your own mousePressEvent and friends. Something like:

from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg import matplotlib.pyplot as plt from skimage import data

class MyCanvas(FigureCanvasQtAgg):

def mousePressEvent(self, event): pass

def main(): image = data.camera() f, ax = plt.subplots() f.canvas = MyCanvas() ax.imshow(image, interpolation='nearest') h, w = image.shape plt.show()

On Wednesday, December 18, 2013 2:13:02 AM UTC-6, Nadav Horesh wrote:

...

I I started to build an interactive image exploration utility based on matplotlib. Recently, following a link on this list, I encountered skimage.viewer, and found that the plugins architecture matches my needs. I could not find how to link keyboard and mouse events (and maybe buttons) to plugins. Any suggestions?

I am using version 0.93 on linux (I can install the pre 0.10, if needed)

Thanks,

Nadav

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