並前往https://github.com/SuYenTing/Quantitative_investment_material_in_R/blob/master/R%E8%AA%9E%E8%A8%80%E7%88%AC%E8%9F%B2%E6%95%99%E5%AD%B8/%E7%88%AC%E8%9F%B2%E7%AF%84%E4%BE%8B_%E5%85%AC%E9%96%8B%E8%B3%87%E8%A8%8A%E8%A7%80%E6%B8%AC%E7%AB%99%E9%87%8D%E5%A4%A7%E8%A8%8A%E6%81%AF%E4%B8%BB%E6%97%A8%E5%85%A8%E6%96%87%E6%AA%A2%E7%B4%A2%E7%88%AC%E8%9F%B2.R