Hi,

I am a beginner in R language. I'm trying to draw a map to see the global
temperature distribution. The format of the data is netcdf and  the spatial
resolution is 1° x 1° . Now I have extracted the temperature data and
stored in a matrix named GT, the latitude is in Lats and longitude in Lons.
But I don't know how to display GT on a global map and how to make a
contour map  filled with different colors.

Thanks in advance for any suggestions!

James

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