import random

def add_plot(x,y, name=None):
    title = "test"
    plots = get_plots(title = title)
    if len(plots)==0:
        p = plot(None,name=name, title = title)[0]        
        p.setLegendVisible(True)
    else:
        p = plots[0]    
        p.addSeries(LinePlotSeries(name))            
    s = p.getSeries(name)    
    s.setLinesVisible(False)
    s.setPointSize(3)
    s.setData(x, y)     
    p.update(False)
    time.sleep(0.001)    #So s.getColor() is updated
    
    x1,x2,y1,y2 = min(x), max(x), min(y), max(y)
    bb = LinePlotSeries(name + " BBox", s.color)
    p.addSeries(bb)               
    bb.setLineWidth(2)
    bb.setData([x1,x2, x2, x1, x1], [y1, y1, y2, y2, x1])     
    print s.color
    
    
        



x=[]
y=[]

for step in range(1,10):
    x=[]
    y=[]    
    for i in range(20):
        x.append(random.random() * 100 / step)
        y.append(random.random() * 100/ step)        
    add_plot (x,y,"Step " + str(step))