In the absence of data coords <- expand.grid(lat=1:5,long=1:5) coords$z <- rnorm(25) Coords<- unstack(coords,z~long) image(as.matrix(Coords))
On Tue, Feb 14, 2012 at 10:36 AM, uday <uday_143...@hotmail.com> wrote: > I have some data set which has latitude, longitude and Z values. > I would like to plot them on global map. > I am thinking to use image > image(x, y, z, zlim, xlim, ylim, col = heat.colors(12), > add = FALSE, xaxs = "i", yaxs = "i", xlab, ylab, > breaks, oldstyle = FALSE, useRaster = FALSE, ...) > > here I have x = longitude > y= latitude > z = z > > but z suppose to be matrix but my z values are single array , could > somebody please tell me how to convert these single array of z to matrix ? > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Plotting-function-image-tp4387796p4387796.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. ______________________________________________ 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.
