def imshow_interact(self, canvas, plot_function, extent=None, label=None, vmin=None, vmax=None, **kwargs):
raise NotImplementedError("<STR_LIT>")<EOL>
This function is optional!

Create an imshow controller to stream 
the image returned by the plot_function. There is an imshow controller written for 
mmatplotlib, which updates the imshow on changes in axis.

The origin of the image show is (0,0), such that X[0,0] gets plotted at [0,0] of the image!

the kwargs are plotting library specific kwargs!