Dear all, I am trying to plot an image so I am trying this through raster layer. You can copy paste the following require('raster') Data<-matrix(data=rnorm(900,80,20),nrow=30,ncol=30) rasterData<-raster(Data) lengthOut<-5 xAxisFrequencies<-seq(800,900,length.out=lengthOut) plot(rasterData, ylab="",xaxt="n",yaxt="n") axis(1, at=seq(0,1,length.out=lengthOut), xAxisFrequencies, col.axis = "blue") What I want is to add a customized x label, but the last line I gave above axis(1,at.....) does not work. It would be also nice to add a bit of legend also under the color bar to explain there what are the values. Could you please help me with those two ? Regards Alex [[alternative HTML version deleted]]