frame_xoffset_ = xoffset; frame_yoffset_ = yoffset;
    private void initialize(int height, int width, int xoffset, int yoffset,                            Vector sites, float minyear, float maxyear,                            float mintemp, float maxtemp) {        plot_graphics_ = new OMGraphicList();        plot_points_ = new OMGraphicList();        plot_background_ = new OMGraphicList();        plot_graphics_.setTraverseMode(OMGraphicList.LAST_ADDED_ON_TOP);        plot_points_.setTraverseMode(OMGraphicList.LAST_ADDED_ON_TOP);        plot_background_.setTraverseMode(OMGraphicList.LAST_ADDED_ON_TOP);        frame_xoffset_ = xoffset;        frame_yoffset_ = yoffset;        max_year_ = maxyear;        min_year_ = minyear;        max_temp_ = maxtemp;        min_temp_ = mintemp;        resizeGraph(frame_x, frame_y, height, width);        setDataPoints(sites);        resetScale();        plotData();    }