Hi all; I am sorry if a similar question has already been asked before, but I could not find in the archive. I am also from computer science field, so I am quite new to the concepts here :)
My question is, in examples 5.8, 5.9, and 5.10 on pages 27 and 28 in the conventions document version 1.4, we have "lat" and "lon" coordinate variables, however they are not associated with any units or any other standard names to enable us identify them neither as latitude nor longitude. How do we need to identify them in these cases? As another question if you would not mind: On page 25 under the title "Horizontal Reference Systems, Grid Mappings, and Projections", it says: "When the coordinate variables for a horizontal grid are not longitude and latitude, it is required that the true latitude and longitude coordinates be supplied via the coordinates attribute. If in addition it is desired to describe the mapping between the given coordinate variables and the true latitude and longitude coordinates, the attribute grid_mapping may be used to supply this description." Now, since I have a grid mapping and associated projection parameters, why should I still need the true latitude and longitude coordinates be supplied additionally? Can't I perform the necessary conversion without this information? That is, isn't it enough to just follow the projection_x_coordinate and projection_y_coordinate attributes? Thank you very much, Yilmaz _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
