def init_xyplot(fd_fff):

    xx = [0.0] * 20     #float xx[ 20 ],
    yy = [0.0] * 20     #yy[ 20 ];

    #for ( i = 0; i <= 10; i++ )
    for i in range(0, 10+1):
        xx[i] = float(i)
        yy[i] = math.exp( - (xx[i] - 5) * (xx[i] - 5) / 8)

    xfl.fl_set_xyplot_data(fd_fff.xyplot, xx, yy, 8, "Plot Title", \
            "X-Axis", "Y|Axis")
    xfl.fl_set_xyplot_ybounds(fd_fff.xyplot, 0, 1.1)
    xfl.fl_set_xyplot_xbounds(fd_fff.xyplot, 0, 10)
    xfl.fl_add_xyplot_overlay(fd_fff.xyplot, 1, xx, yy, 11, xfl.FL_YELLOW)
    xfl.fl_set_xyplot_overlay_type(fd_fff.xyplot, 1, xfl.FL_LINEPOINTS_XYPLOT)
    xfl.fl_set_xyplot_interpolate(fd_fff.xyplot, 1, 2, 0.1)

    xfl.fl_add_xyplot_text(fd_fff.xyplot, 0.5, 1.0, "Gaussian\nDistribution", \
            xfl.FL_ALIGN_RIGHT, xfl.FL_WHITE)

    xfl.fl_set_xyplot_key(fd_fff.xyplot, 0, "Original")
    xfl.fl_set_xyplot_key(fd_fff.xyplot, 1, "Overlay")
    xfl.fl_set_xyplot_key_position(fd_fff.xyplot, 9.8, 1.08, \
            xfl.FL_ALIGN_LEFT_BOTTOM)
def main(lsysargv, sysargv):
    global xypui

    x = [0.0] * 11
    y = [0.0] * 11

    xfl.fl_initialize(lsysargv, sysargv, "FormDemo", None, 0)
    xypui = create_form_axypform()

    # Fill-in form initialization code

    xfl.fl_set_xyplot_ybounds(xypui.xyplot, 1.0, 10.0)
    for i in range(0, 11):
        x[i] = y[i] = float(i) + 1


    xfl.fl_add_xyplot_overlay(xypui.xyplot, 1, x, y, 10, xfl.FL_YELLOW)
    xfl.fl_set_xyplot_overlay_type(xypui.xyplot, 1, xfl.FL_LINEPOINTS_XYPLOT)
    xfl.fl_set_xyplot_interpolate(xypui.xyplot, 1, 2, 0.1)

    #srand( time( NULL ) );
    random.seed(None)

    RAND_MAX = xfl.INT_MAX
    for i in range(0, 10):
        y[i] += float(random.random() / RAND_MAX - 0.5)

    xfl.fl_set_xyplot_data(xypui.xyplot, x, y, 11, \
            "Active (log) xyplot with overlay", "x-axis", "y-axis")
    xfl.fl_set_xyplot_linewidth(xypui.xyplot, 0, 2)
    xfl.fl_set_xyplot_xgrid(xypui.xyplot, xfl.FL_GRID_MINOR)

    # Show the first form

    xfl.fl_show_form(xypui.axypform, xfl.FL_PLACE_MOUSE | xfl.FL_FREE_SIZE,
            xfl.FL_FULLBORDER, "xyplotactivelog")

    xfl.fl_do_forms()

    return 0
def interpolate_cb(pobj, data):
    if xfl.fl_get_button(pobj):
        value = 3
    else:
        value = 0
    xfl.fl_set_xyplot_interpolate(xypui.xyplot, 0, value, 0.2)