In a shiny app I would like to put the month - year (ie "Jan- 13", "Feb- 13") of a plot.zoo multiple line plot. I have googled and it looks like you have to use a panel and if statement to find the last plot but I still cannot get the month - year to show up on the x axis.
Here is code you can run:
library("zoo")
Factors <- matrix(seq(from=1, to=9, by=1), nrow=3,ncol=3)
Factors
datesNumeric <- cbind(20130101, 20130220,20130801)
dates <- as.Date(as.character(datesNumeric), format="%Y%m%d")
ticks <- seq(dates[1], dates[length(dates)], by = "1 month") #I make some ticks
ticks
my.panel <- function(x, y, ..., pf = parent.frame()) {
grid(NA,NULL)
#abline(v=seq(1,168,24),col = "lightgray", lty = "dotted", lwd = par("lwd"))
lines(x, y, ...)
#if bottom panel
if (with(pf, length(panel.number) == 0 ||panel.number %% nr == 0 || panel.number == nser)) {
#axis(1, at = ticks, labels = ticks)
axis.Date(1, at = ticks, format= "%m-%y", las = 1)
}
}
plot(as.zoo(Factors), main="Factors 1,2, & 3", ylab=c("Factor 1","Factor 2","Factor 3") , xlab= "Date", panel = my.panel,yax.flip=FALSE,col=1:3,xaxt="n")
Any idea how to get dates (ie "Jan- 13", "Feb- 13", etc...) to show up on the x axis? thank you.
You should create a reproducible example. plot.zoo
is just a base plot. So to format axis with dates you should use axis.Date
.
x.Date <- as.Date(paste(2003, c(1, 3, 7, 9, 14), 02,sep = "-"))
x <- zoo(rnorm(5), x.Date)
plot(x,xaxt="n")
axis.Date(1, at = x.Date, format= "%m-%y", las = 1)
EDIT after op update:
You should create a valid zoo object.
plot(zoo(x=Factors,order.by=ticks), ## here your error
main="Factors 1,2, & 3", ylab=c("Factor 1","Factor 2","Factor 3") ,
xlab= "Date", panel = my.panel,yax.flip=FALSE,col=1:3,
format='%b-%y') ## format labels
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