python - lmfit, result.plot_fit(ax) not plotting all 3 plots in pyqt -
i have pyqt5 widget
class mplibwidget(qtwidgets.qwidget): """ base matplotlib widget """ def __init__(self, parent=none): super(mplibwidget, self).__init__(parent) self.figure = figure() self.canvas = figurecanvasqtagg(self.figure) self.canvas.setparent(self) self.mpl_toolbar = navigationtoolbar2qt(self.canvas, self) self.canvas.mpl_connect('key_press_event', self.on_key_press) self.axes = self.figure.add_subplot(111) self.axes.hold(false) when try use fit using result.plot_fit(ax=ax), plots data column of plot fit. not init_fit or best_fit.
def fit(self, data, widget): self.layers = ['air', 'bk7', 'slg'] wv = np.arange(400, 900) mod = lmfit.model(self.get_r, ['wavelengths'], ['thickness', 'void_percent']) mod.set_param_hint('thickness', value=130, min=50, max=250) mod.set_param_hint('void_percent', value=.15, min=.05, max=.5) r = data.norm(wv) result = mod.fit(r, wavelengths=wv) rmse = (sp.sum(result.residual**2)/(result.residual.size-2))**0.5 bf_values = result.best_values bf_str = 'thk: ' + str(round(bf_values['thickness'])) + ", void %: " + str(round(bf_values['void_percent']*100, 2)) txt_spot = wv.min()-100 + (wv.max()-wv.min()) / 2 ax = widget.figure.axes[0] result.plot_fit(ax=ax, datafmt='b+', initfmt='r--', fitfmt='g-') ax.text(txt_spot, .9, "rmse: "+str(round(rmse, 3))) ax.text(txt_spot, .85, bf_str) widget.canvas.draw() if don't use (ax=ax) , plot_fit(), plt.show() plots 3 axes fine opens new window. want plot show in widget inside program.
inside widget ax=ax 
outside widget fit 
the problem in self.axes.hold(false) line clears figure before each call plot , like. plot_fit last line plotted 'data', hence data line.
do not use hold(false) in general, thinking of removing upstream.
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