[BioC] get pixel coordinates interactively with EBimage

[Arnaud Duranel]

Hello
I am using R 2.13.0 & EBImage 3.8.0.
I am looking for a way to obtain a pixel coordinates (as an R object) by 
clicking interactively on an image displayed in the GTK window using the 
EBImage display() function.
I could use locator() after having converted the image to grayscale and 
displayed it using image(), but as far as I am aware I would not be able 
to zoom in and out and move the picture around interactively.
Many thanks for your help.
A. Duranel, UCL Department of Geography