#範例4-24：漏斗图：漏斗图通常用于表示业务流程不同阶段的数据。在商业智能中，这是识别流程潜在问题区域的重要机制。例如，它用于观察销售过程中每个阶段的收入或损失，并显示逐渐减小的值。每个阶段均以占所有值的百分比表示。
from plotly import graph_objects as go 
 
fig = go.Figure() 
 
fig.add_trace(go.Funnel( 
    name = 'Montreal', 
    y = ["Website visit", "Downloads", "Potential customers", "Requested price"], 
    x = [120, 60, 30, 20], 
    textinfo = "value+percent initial")) 
 
fig.add_trace(go.Funnel( 
    name = 'Toronto', 
    orientation = "h", 
    y = ["Website visit", "Downloads", "Potential customers", "Requested price", "invoice sent"], 
    x = [100, 60, 40, 30, 20], 
    textposition = "inside", 
    textinfo = "value+percent previous")) 
 
fig.add_trace(go.Funnel( 
    name = 'Vancouver', 
    orientation = "h", 
    y = ["Website visit", "Downloads", "Potential customers", "Requested price", "invoice sent", "Finalized"], 
    x = [90, 70, 50, 30, 10, 5], 
    textposition = "outside", 
    textinfo = "value+percent total")) 

fig.write_html('exp4-24.html', auto_open=True)