how to set zoom level manually ? about hellocharts-android HOT 1 CLOSED

   /**
     * Programatically zoom chart to given point(viewport point). Call this method after chart data had been set.
     * 
     * @param x
     *            x within chart maximum viewport
     * @param y
     *            y within chart maximum viewport
     * @param zoomLevel
     *            value from 1 to maxZoom(default 14). 1 means chart has no zoom, 14 means chart has maximum zoom.
     * @param isAnimated
     *            set true if zoom should be animated.
     */
    public void setZoomLevel(float x, float y, float zoomLevel, boolean isAnimated);

//set chart data first
chart.setLineChartData(yourData);
//zoom, in this example without animation
chart.setZoomLevel(chart.getMaximumViewport.centerX, chart.getMaximumViewport.centerY, newZoomLevel,  false);