API changes at 0.50 * refactored Figure class so it is no longer backend dependent. FigureCanvasBackend takes over the backend specific duties of the Figure. matplotlib.backend_bases.FigureBase moved to matplotlib.figure.Figure. * backends must implement FigureCanvasBackend (the thing that controls the figure and handles the events if any) and FigureManagerBackend (wraps the canvas and the window for matlab interface). FigureCanvasBase implements a backend switching mechanism * Figure is now an Artist (like everything else in the figure) and is totally backend independent * GDFONTPATH renamed to TTFPATH * backend faceColor argument changed to rgbFace * colormap stuff moved to colors.py * arg_to_rgb in backend_bases moved to class ColorConverter in colors.py * GD users must upgrade to gd-2.0.22 and gdmodule-0.52 since new gd features (clipping, antialiased lines) are now used. * Renderer must implement points_to_pixels Migrating code: Matlab interface: The only API change for those using the matlab interface is in how you call figure redraws for dynamically updating figures. In the old API, you did fig.draw() In the new API, you do manager = get_current_fig_manager() manager.canvas.draw() See the examples system_monitor.py, dynamic_demo.py, and anim.py API There is one important API change for application developers. Figure instances used subclass GUI widgets that enabled them to be placed directly into figures. Eg, FigureGTK subclassed gtk.DrawingArea. Now the Figure class is independent of the backend, and FigureCanvas takes over the functionality formerly handled by Figure. In order to include figures into your apps, you now need to do, for example # gtk example fig = Figure(figsize=(5,4), dpi=100) canvas = FigureCanvasGTK(fig) # a gtk.DrawingArea canvas.show() vbox.pack_start(canvas) If you use the NavigationToolbar, this in now intialized with a FigureCanvas, not a Figure. The examples embedding_in_gtk.py, embedding_in_gtk2.py, and mpl_with_glade.py all reflect the new API so use these as a guide. All prior calls to figure.draw() and figure.print_figure(args) should now be canvas.draw() and canvas.print_figure(args) Apologies for the inconvenience. This refactorization brings significant more freedom in developing matplotlib and should bring better plotting capabilities, so I hope the inconvenience is worth it. API changes at 0.42 * Refactoring AxisText to be backend independent. Text drawing and get_window_extent functionality will be moved to the Renderer. * backend_bases.AxisTextBase is now text.Text module * All the erase and reset functionality removed frmo AxisText - not needed with double buffered drawing. Ditto with state change. Text instances have a get_prop_tup method that returns a hashable tuple of text properties which you can use to see if text props have changed, eg by caching a font or layout instance in a dict with the prop tup as a key -- see RendererGTK.get_pango_layout in backend_gtk for an example. * Text._get_xy_display renamed Text.get_xy_display * Artist set_renderer and wash_brushes methods removed * Moved Legend class from matplotlib.axes into matplotlib.legend * Moved Tick, XTick, YTick, Axis, XAxis, YAxis from matplotlib.axes to matplotlib.axis * moved process_text_args to matplotlib.text * After getting Text handled in a backend independent fashion, the import process is much cleaner since there are no longer cyclic dependencies * matplotlib.matlab._get_current_fig_manager renamed to matplotlib.matlab.get_current_fig_manager to allow user access to the GUI window attribute, eg figManager.window for GTK and figManager.frame for wx API changes at 0.40 - Artist * __init__ takes a DPI instance and a Bound2D instance which is the bounding box of the artist in display coords * get_window_extent returns a Bound2D instance * set_size is removed; replaced by bbox and dpi * the clip_gc method is removed. Artists now clip themselves with their box * added _clipOn boolean attribute. If True, gc clip to bbox. - AxisTextBase * Initialized with a transx, transy which are Transform instances * set_drawing_area removed * get_left_right and get_top_bottom are replaced by get_window_extent - Line2D Patches now take transx, transy * Initialized with a transx, transy which are Transform instances - Patches * Initialized with a transx, transy which are Transform instances - FigureBase attributes dpi is a DPI intance rather than scalar and new attribute bbox is a Bound2D in display coords, and I got rid of the left, width, height, etc... attributes. These are now accessible as, for example, bbox.x.min is left, bbox.x.interval() is width, bbox.y.max is top, etc... - GcfBase attribute pagesize renamed to figsize - Axes * removed figbg attribute * added fig instance to __init__ * resizing is handled by figure call to resize. - Subplot * added fig instance to __init__ - Renderer methods for patches now take gcEdge and gcFace instances. gcFace=None takes the place of filled=False - True and False symbols provided by cbook in a python2.3 compatible way - new module transforms supplies Bound1D, Bound2D and Transform instances and more - Changes to the matlab helpers API * _matlab_helpers.GcfBase is renamed by Gcf. Backends no longer need to derive from this class. Instead, they provide a factory function new_figure_manager(num, figsize, dpi). The destroy method of the GcfDerived from the backends is moved to the derived FigureManager. * FigureManagerBase moved to backend_bases * Gcf.get_all_figwins renamed to Gcf.get_all_fig_managers Jeremy: Make sure to self._reset = False in AxisTextWX._set_font. This was something missing in my backend code.