[R] Plot for 10 years extrapolation

[varin sacha]

Dear R-Experts,

Here below my R code working but I don't know how to complete/finish my R code to get the final plot with the extrapolation for the10 more years.

Indeed, I try to extrapolate my data with a linear fit over the next 10 years. So I create a date sequence for the next 10 years and store as a dataframe to make the prediction possible.
Now, I am trying to get the plot with the actual data (from year 2004 to 2018) and with the 10 more years extrapolation.

Thanks for your help.

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date <-as.Date(c("2018-12-31", "2017-12-31", "2016-12-31", "2015-12-31", "2014-12-31", "2013-12-31", "2012-12-31", "2011-12-31", "2010-12-31", "2009-12-31", "2008-12-31", "2007-12-31", "2006-12-31", "2005-12-31", "2004-12-31"))
 
value <-c(15348, 13136, 11733, 10737, 15674, 11098, 13721, 13209, 11099, 10087, 14987, 11098, 13421, 9023, 12098)
 
model <- lm(value~date)
 
plot(value~date ,col="grey",pch=20,cex=1.5,main="Plot")
abline(model,col="darkorange",lwd=2)
 
dfuture <- data.frame(date=seq(as.Date("2019-12-31"), by="1 year", length.out=10))
 
predict(model,dfuture,interval="prediction")
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