def line(self, x, y):
        self.path.append('L ' + str(x) + ' ' + str(y))
Override this method so that it *updates* the tvtk pipeline
dataset/ETHPy150Open CGATOxford/cgat/CGAT/SVGdraw.py/pathdata.line--crossover with--dataset/ETHPy150Open enthought/mayavi/mayavi/components/grid_plane.py/GridPlane.update_pipeline