canvas.getAxis(0).setRotation(-Math.PI / 2);
canvas.getAxis(0).setRotation(-Math.PI / 2); canvas.getAxis(1).setFrameVisible(false); canvas.getAxis(1).setGridVisible(false);
canvas.getAxis(0).setRotation(-Math.PI / 2); canvas.getAxis(1).setFrameVisible(false); canvas.getAxis(1).setGridVisible(false);