Hello,

I believe the error message comes from the last line, getQuote returns a data.frame with a Date column and log(aaa) will try to log a date.
Error.
log(aaa[-1]) works, maybe the OP wants to revise the code and then come back to this or other thread.

Hope this helps,

Rui Barradas

Às 19:06 de 25/07/2020, Bert Gunter escreveu:
What is the error message? Knowing this may help others diagnose the
problem.

Bert Gunter

"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )


On Sat, Jul 25, 2020 at 8:41 AM Pedro páramo <percentil...@gmail.com> wrote:

Hi all,

I want to calculate interanual (not year to date) variation of a stock, I
am able to obtain year to date with annualReturn, but no way to obtain the
interanual increase. It says me no numerical output.

Can anyone guide me to obtain it.

library(PerformanceAnalytics)
library(dplyr)
library(tibble)
library(lubridate)
library(PerformanceAnalytics)
library(quantmod)
library(ggplot2)
library(png)
library(RCurl)

fecha<-Sys.Date()-365 #with this I obtain one year back beginning
precio<-getSymbols("ACX.MC",from='fecha')
ret2<- na.omit(CalculateReturns(Cl(ACX.MC)))
g<-annualReturn(ACX.MC) #This is year to date
d<-CalculateReturns(Cl(ACX.MCC))
aaa<-getQuote('ACX.MC',from='fecha')
Lastprice<-aaa[1,2]

lo<-c(diff(log(aaa),250))  #With this I try  to obtain interanual year
variation but error


Hope you can help me

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