r5

#Microsoft montly and daily log  returns
ms.monthly.r<-Return.calculate(ms.monthly, method = "log")
ms.daily.r<-Return.calculate(ms.z, method = "log")
head(ms.monthly.r)
head(ms.daily.r)
#S and P montly and daily log  returns
sp.monthly.r<-Return.calculate(sp.monthly, method = "log")
sp.daily.r<-Return.calculate(sp.z, method = "log")
head(sp.monthly.r)
head(sp.daily.r)
#daily and monhtly log returns for merged data
ms.sp.dp.r<-Return.calculate(ms.sp.dp, method = "log")
ms.sp.dm.r<-Return.calculate(ms.sp.dm, method = "log")
head(ms.sp.dp.r)
tail(ms.sp.dm.r)
To calculate simple returns, just replace "log" with "simple"