Hi
I have been using R for 6 months now for various Genetics Data analysis including simulations. I wish someone could give me a step by step procedure for creating a contour plot for XYZ data and overlay it on a Geographical Map. My data is something like this
X(Latitude)        Y(Longitude)         Z(data value at that point)19° 37'                    78° 30'                      2015° 19'                     78° 17'                      328° 04'                        77° 36'                     4012° 34'                    78° 37'                        27and so on.....
I request anybody who knows to draw such a plot on a map to kindly provide me with a step by step  procedure.
Thanking you
TrulyG. Arun Kumar  Junior Research Fellow  Dept of Immunology  School of Biological Sciences  Madurai Kamaraj University  Madurai - 625 021   "An eye for an eye will only make the entire world blind."-Mohandas Karamchand Gandhi


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