Mpl 1.0.0 The way Annotation.draw (in text.py) is implemented, if an annotation is created with an annotation point (x,y) and text located at (tx,ty) and then the you pan around on the graph such that (x,y) is no longer visible, the annotation suddenly disappears.
I would suggest the following modification to Annotation.draw in text.py. All it does is set a clip box so that the annotation and arrow is still drawn, but the arrow is clipped at the axes boundary. It is a much nicer effect than the annotation disappearing. I have made this modification in my source locally, and it works very well, but I thought I would suggest here for inclusion into the main code base. Modified lines are marked with a CHANGEME. It is only a four line change. @allow_rasterization def draw(self, renderer): """ Draw the :class:`Annotation` object to the given *renderer*. """ if renderer is not None: self._renderer = renderer if not self.get_visible(): return xy_pixel = self._get_position_xy(renderer) #if not self._check_xy(renderer, xy_pixel): CHANGEME (commented out) # return CHANGEME (commented out) self._update_position_xytext(renderer, xy_pixel) self.update_bbox_position_size(renderer) if self.arrow is not None: if self.arrow.figure is None and self.figure is not None: self.arrow.figure = self.figure self.arrow.set_clip_box(self.axes.bbox) # CHANGEME (new line) self.arrow.draw(renderer) if self.arrow_patch is not None: if self.arrow_patch.figure is None and self.figure is not None: self.arrow_patch.figure = self.figure self.arrow_patch.set_clip_box(self.axes.bbox) # CHANGEME (new line) self.arrow_patch.draw(renderer) Text.draw(self, renderer) -- Daniel Hyams dhy...@gmail.com ------------------------------------------------------------------------------ Using storage to extend the benefits of virtualization and iSCSI Virtualization increases hardware utilization and delivers a new level of agility. Learn what those decisions are and how to modernize your storage and backup environments for virtualization. http://www.accelacomm.com/jaw/sfnl/114/51434361/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users