Hi all,
I have a matrix dd with dates and data. i WANT to create a grpah with shade
between the line and the zero axis. I´m trying to use polygon but something
doesn´ t work
Imagine.
I want to plot
g<-read.table("dd.txt", col.names=c("fecha","DP"))
g$fecha <- as.Date(g$fecha, format="%d/%m/%Y")
t<-g$fecha
st<-length(g$DP)
ft<-plot(t,g$DP,type="l",ylab="DP")
polygon(c(1, 1:st, st), c(0, g$USGDP, 0), col = "blue")
abline(h = 0, lwd = 1, col = "black")
If I ommit ploygon line the doc works properly (it plots a graph line).
But I want to colur the area below or over the line and the zero axis.
Can you guide or indicate because in this case polygon doesn´t work.
I attach the two files.
Thanks in advance for all.
31/03/1948 12.9
30/06/1948 24.9
30/09/1948 45.6
31/12/1948 24.2
31/03/1949 21.1
30/06/1949 -21.1
30/09/1949 -20.5
31/12/1949 -21.6
31/03/1950 23.8
30/06/1950 27.4
30/09/1950 10.4
31/12/1950 13.4
31/03/1951 10.3
30/06/1951 28.9
30/09/1951 26.8
31/12/1951 25.2
31/03/1952 24.9
30/06/1952 23.3
30/09/1952 22
31/12/1952 25.2
31/03/1953 26.1
30/06/1953 26.7
30/09/1953 25.4
31/12/1953 0.4
31/03/1954 -21.9
30/06/1954 -22.5
30/09/1954 -02.8
31/12/1954 22.8
g<-read.table("PIB.txt", col.names=c("fecha","DP"), sep=";",dec=",")
g$fecha <- as.Date(g$fecha, format="%d/%m/%Y")
t<-g$fecha
st<-length(g$DP)
ft<-plot(t,g$DP,type="l",ylab="US GDP", xlab="Tiempo",main="Evolución Histórica
PIB US")
#polygon(c(1, 1:st, st), c(0, g$DP, 0), col = "blue")
grid()
abline(h = 0, lwd = 1, col = "black")
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