Hi, I have used sm package (> sm.sphere(k$x, k$y, kappa = 20, hidden = FALSE, sphim = FALSE, addpoints = FALSE) to obtain global lightning distribution. But I am still in trouble with the color image - everything is thick black and therefore, difficult to note the regions of higher density. Could you please advise if there is anything I could do to add the color image. I would be grateful for any help. Thank you. Ogbos [[alternative HTML version deleted]]