I've written a very simple bit of code to plot a trajectory using rgl:
x <- (c(0,-5.947,-11.496,-16.665,-21.474,-25.947,-30.116,-34.017,-37.684,-41.148,-44.435,-47.568,-50.567,-53.448,-56.223,-58.906)) y <- (c(0,33.729,65.198,94.514,121.784,147.151,170.797,192.920,213.717,233.360,252.003,269.774,286.781,303.117,318.858,334.071)) z <- (c(3,11.914,19.629,26.066,31.167,34.902,37.262,38.257,37.903,36.221,33.233,28.964,23.442,16.696,8.761,-0.325)) plot3d(x,y,z, type='l',axes=FALSE, box=FALSE) I have a PNG file that I want to place the plot on top of. I've arranged the image so that the point at x=282 px and y=52 px should correspond with the origin of the graph. Thanks in advance for your help, --CW _________________________________________________________________ id=1&media=aero-shake-7second&listid=1&stop=1&ocid=PID24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_7secdemo:122009 [[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.