Hi all, I have posted similar questions regarding this topic, but I just can't seem to get over the hump and find a straightforward way to do this. I have attached my file as a reference. Basically, the attached file is a 5 degree by 5 degree grid of the the world (2592 cells), most of them are NA's. I just want to be able to plot this grid over a world map and color code the cells. For example, if a cell has a temperature less than 20 degrees it will be blue, 21 to 50 green color, 51-70 orange, 71+ red colored cells. For any NAs, they should be colored white.
I know how to create a map of the world using map() and add a grid to it using map.grid(), but I can't color code the cells the way I need. Is there a way to do this in R? Thanks again. dxc13 http://www.nabble.com/file/p23514804/time1test.txt time1test.txt -- View this message in context: http://www.nabble.com/plotting-a-grid-with-color-on-a-map-tp23514804p23514804.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.
