require(quantmod) getSymbols(c('0700.HK','1297.HK','0763.HK')) A_ret=dailyReturn(`0700.HK`) B_ret=dailyReturn(`1297.HK`) C_ret=dailyReturn(`0763.HK`) dat=merge(A_ret,B_ret,C_ret) require(timeSeries) dat=as.timeSeries(dat) require(fPortfolio) Frontier = portfolioFrontier(dat) Error in seq.default(min(mu), max(mu), length = nFrontierPoints) :
'from' cannot be NA, NaN or infinite
红体字部分出现问题,求各位大神解答~
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