[R] Polygon shade

Jim Lemon drjimlemon at gmail.com
Wed Oct 7 10:06:52 CEST 2015


Hi bgnum,
You can try something like this:

testdates<-as.Date(paste(1:30,"Sep",2015),"%d %b %Y")
nemails<-sample(10:30,30,TRUE)
library(plotrix)
stackpoly(testdates,nemails,col="blue")

Jim


On Wed, Oct 7, 2015 at 12:20 AM, bgnumis bgnum <bgnumis at gmail.com> wrote:

> Hi All,
>
> I want to shade the area below "f" variable and it doesn´t draw:
>
> plot(z$Dateh[nn:length(z$Dateh)],f,type="l",col="black", xlab="Time",
> ylab="Line")
> grid()
> polygon(c(1, 1:st, st),c(0, f, 0), col = "blue")
>
> st is the length of f.
>
> But if I plot
>
> plot(f,type="l",col="black", xlab="Time", ylab="Correlation")
> grid()
> polygon(c(1, 1:st, st),c(0, f, 0), col = "blue")
>
> But the axis doesn´t refect the date labels.
>
> ¿What should I do in the first code to achive it draws the blue?
>
> ¿If not? How can I ommit the axis in the scond code and to add the
> z$Dateh[nn:length(z$Dateh)?
>
> Hope someone can help me.
>
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>
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