def setupPlottingWidgets(self): self.plotconfigs = (None, dict(shade=0.35, linewidth=1, color="g")) self.rtPlotter = RtPlotter(rangeSelectionCallback=self.plotMz) self.rtPlotter.setMinimumSize(300, 100) self.mzPlotter = MzPlotter() self.mzPlotter.setMinimumSize(300, 100) pol = QSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum) pol.setVerticalStretch(5) self.rtPlotter.widget.setSizePolicy(pol) self.mzPlotter.widget.setSizePolicy(pol)