Hallo, i try to draw a plot (plot.zoo) with a secondary y-axis. Further I want to draw reference lines. Unfortunately I do not manage to get control on the ticks, so that the reference lines match both- primary and secondary y-axis.
Maybe someone already solved this problem?? It would be great. Bastian Here is some code to ty out: ## R-Help 2014-05-27 ## Test second. Y-Axix library("zoo") ## generate some smooth timeseries x1 <- c(38.2, 18.1, 83.2, 42.7, 22.8, 48.1, 81.8, 129.6, 52.0, 110.3) x2 <- c(2.2, 0.8, 0.7, 1.6, 0.9, 0.9, 1.1, 2.8, 5.1, 2.1) z1 <- zooreg(x1, start=as.POSIXct("2013-01-01 00:00:01"), frequency=0.0000006) z2 <- zooreg(x2, start=as.POSIXct("2013-01-01 00:00:20"), frequency=0.0000006) zt <- zooreg(rnorm(1050), start=as.POSIXct("2013-01-01 00:00:01"), frequency=0.00007) z<-merge(zt, z1, all = TRUE) z<-merge(z, z2, all = TRUE) Zf<-na.spline(z[,2:3], na.rm = FALSE) ## ## ## ## ## Plot 1 plot(Zf$z1, ylim=c(0,signif(max(na.omit(Zf$z1)*1.05),2)), xlab="") #grid(col = "lightgray", lty = "dotted") ## this plots at weird ticks #abline(h=ablineticks, col = "lightgray", lty = "dotted") ## need to write a vector for matching lines ## The following line of z1 doesn't match the first opar <- par(usr = c(par("usr")[1:2], c(0,signif(max(na.omit(Zf$z1)*1.05),2)))) axis(side = 4) mtext(ylab2, side = 4, line = 3, cex=0.7) lines(Zf$z1, lty=2) par(opar) ## ## ## ## ## nice would be a sekundary axis of a second zoo series with ticks matching the first one plot(Zf$z1, ylim=c(0,signif(max(na.omit(Zf$z1)*1.05),2)), xlab="") #grid(col = "lightgray", lty = "dotted") ## this plots at weird ticks #abline(h=ablineticks, col = "lightgray", lty = "dotted") ## need to write a vector for matching lines ## The following line of z1 doesn't match the first opar <- par(usr = c(par("usr")[1:2], c(0,signif(max(na.omit(Zf$z2)*1.05),2)))) axis(side = 4) mtext(ylab2, side = 4, line = 3, cex=0.7) lines(Zf$z2, lty=2) par(opar) ## ## ## ## [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.