plot: ability to display 2 (or n) connected plots

it should be possible to display multiple plots on the same canvas (or gather multiple canvases on the same image?). it should also be possible to "connect" the axes of these plots so they are properly aligned:

http://matplotlib.org/examples/axes_grid/simple_axesgrid.html http://matplotlib.org/examples/axes_grid/simple_axesgrid2.html http://matplotlib.org/examples/pylab_examples/axes_zoom_effect.html http://matplotlib.org/examples/pylab_examples/finance_work2.html http://matplotlib.org/examples/pylab_examples/ganged_plots.html http://matplotlib.org/examples/pylab_examples/scatter_hist.html http://matplotlib.org/examples/pylab_examples/subplots_demo.html