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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