Plot base 100
Hi Pedro, Assuming that you get a vector of daily percentage changes: dpc<-c(+3.1, -2.8, +1.7, +2.1) get the cumulative change and add 100: cumsum(dpc)+100 [1] 103.1 100.3 102.0 104.1 You can then plot that. As Rui noted, your mail client is inserting invisible characters that prevent cutting and pasting into R. Jim
On Mon, Jul 20, 2020 at 4:46 AM Pedro p?ramo <percentil101 at gmail.com> wrote:
Hi all,
I am trying to make a plot based on stock market prices and the library
quantmod, imagine
BatchGetSymbols(?^IBEX?, first.date = ?1999-12-31?,
last.date = ?2020-12-07?)
The thing is I want to plot a plot that for each year on 31/12/year tthe
base is 100 and each day calvulate the cumulative returns so if on
01/01/year t+1 in one day stock climbs a 3% the Index values 103. I want to
plot for each day off the year to the end of the year a line (in fact would
be 20 lines) in the example from year 2000 to actual 2020.
Aditionally on the current year I want to plot the line more thig (dar) to
clearly distinguish It.
Do you know if there is some predefinited function to construct It.
Many thanks in advance
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