I'm having trouble with alignment of a trend line overlayed onto an image plot. The two should be plotted on the same x-axis (time-series). However, the trend line begins about an inch into the image plot x-axis and ends about an inch off of end of the image plot. Once I have the alignment sorted, I need to put a secondary y-axis on the image plot which is scaled for the trend line. An example plot is attached. My code follows.
tad.image(ptt.tad, dbins, interp=T, loess.interp=F, ylim=c(300,1), main="STM07.4", zlim=c(0,1)) axis(4, at=c(1,2,3,4), labels=c(1,2,3,4), tick=T, las=1) par(new=T) plot(x=stm$dal, y=stm$model, ann=F, axes=F, type="l", col="black", lwd=2) Ideas involving the use of par(usr=c(,,,)) haven't solved the issue, and attempting to convert the x-axis coordinates using the function grconvertX() hasn't worked either. Using the axis function as shown here hasn't helped either. The function above called tad.image() was written by someone else, but it calls the image() function to make the plot shown. http://www.nabble.com/file/p21362251/test.plot.jpeg test.plot.jpeg -- View this message in context: http://www.nabble.com/Alignment-of-image-plot-overlay-tp21362251p21362251.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
