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POAdd new navigate modes in matplotlib
 

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    <p>I'm writing a wx/matplotlib application, and I'm having considerable difficulty adding a new tool to the matplotlib NavigationToolbar.</p> <p>Basically I want to add tools for selection (marquee, lasso, etc) that will toggle the controlled subplots mouse mode. As of yet I have been unable to find any features that will let me do this easily.</p> <p>I did, however, just discover this function that looked like it would be helpful: <a href="http://matplotlib.sourceforge.net/api/axes_api.html?highlight=set_navigate_mode#matplotlib.axes.Axes.set_navigate_mode" rel="noreferrer">http://matplotlib.sourceforge.net/api/axes_api.html?highlight=set_navigate_mode#matplotlib.axes.Axes.set_navigate_mode</a></p> <p>Unfortunately, as the warning implies, it doesn't really help me.</p> <p>Does anybody have a clue of how to do this? Below is a stripped down example showing how far I've gotten. The bookmark icon is used in place of my lasso icon, and I've removed the lasso functionality for brevity.</p> <pre><code>import wx from matplotlib.patches import Rectangle from matplotlib.widgets import Lasso from matplotlib.figure import Figure from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg from matplotlib.backends.backend_wxagg import NavigationToolbar2WxAgg as NavigationToolbar class ScatterPanel(FigureCanvasWxAgg): ''' Contains the guts for drawing scatter plots. ''' def __init__(self, parent, **kwargs): self.figure = Figure() FigureCanvasWxAgg.__init__(self, parent, -1, self.figure, **kwargs) self.canvas = self.figure.canvas self.SetMinSize((100,100)) self.figure.set_facecolor((1,1,1)) self.figure.set_edgecolor((1,1,1)) self.canvas.SetBackgroundColour('white') self.subplot = self.figure.add_subplot(111) self.navtoolbar = None self.lasso = None self.redraw() self.canvas.mpl_connect('button_press_event', self.on_press) self.canvas.mpl_connect('button_release_event', self.on_release) def lasso_callback(self, verts): pass def on_press(self, evt): if evt.button == 1: if self.canvas.widgetlock.locked(): return if evt.inaxes is None: return if self.navtoolbar.mode == 'lasso': self.lasso = Lasso(evt.inaxes, (evt.xdata, evt.ydata), self.lasso_callback) self.canvas.widgetlock(self.lasso) def on_release(self, evt): # Note: lasso_callback is not called on click without drag so we release # the lock here to handle this case as well. if evt.button == 1: if self.lasso: self.canvas.draw_idle() self.canvas.widgetlock.release(self.lasso) self.lasso = None else: self.show_popup_menu((evt.x, self.canvas.GetSize()[1]-evt.y), None) def redraw(self): self.subplot.clear() self.subplot.scatter([1,2,3],[3,1,2]) def toggle_lasso_tool(self, evt): if evt.Checked(): self.navtoolbar.mode = 'lasso' #self.subplot.set_navigate_mode('lasso') # Cheat: untoggle the zoom and pan tools self.navtoolbar.ToggleTool(self.navtoolbar._NTB2_ZOOM, False) self.navtoolbar.ToggleTool(self.navtoolbar._NTB2_PAN, False) else: self.navtoolbar.mode = '' self.lasso = None #self.subplot.set_navigate_mode('') def get_toolbar(self): if not self.navtoolbar: self.navtoolbar = NavigationToolbar(self.canvas) self.navtoolbar.DeleteToolByPos(6) ID_LASSO_TOOL = wx.NewId() lasso = self.navtoolbar.InsertSimpleTool(5, ID_LASSO_TOOL, wx.ArtProvider.GetBitmap(wx.ART_ADD_BOOKMARK), isToggle=True) self.navtoolbar.Realize() self.navtoolbar.Bind(wx.EVT_TOOL, self.toggle_lasso_tool, id=ID_LASSO_TOOL) return self.navtoolbar if __name__ == "__main__": app = wx.PySimpleApp() f = wx.Frame(None, size=(600,600)) p = ScatterPanel(f) f.SetToolBar(p.get_toolbar()) f.Show() app.MainLoop() </code></pre> <p>Thanks, Adam</p>
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