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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Hi Randy, On Jun 1, 2017, at 12:28 PM, Randy Horne <rhorne@xxxxxxxxxxxxxxxxx<mailto:rhorne@xxxxxxxxxxxxxxxxx>> wrote: (1) I have one overarching question. Boiling down what you have written down, I think you are asking the CF standard to be extended to include several swath feature types: multibandSwath, multibandImageSwath, swath, imageSwath, profileSwath, multibandProfileSwath, FORProfileSwath - as you allude to in the beginning of the paper. Is this correct ? Yes. At this point I am not sure exactly what part of the proposal will make it into the CF convention but the intention is to have a chapter on swath data in there like for the Discrete Sampling Geometries. One other issue worth mentioning … (2) In the interest in NOT letting a mistake we made in the application of CF conventions to GOES-R products represented on a standard angular grid, propagate to swaths …. When you declare that projection_x_coordinate and projection_y_coordinate have units = “radians”. This is not allowed because the canonical units for these standard_names are meters. If I had to do it over again, I would have asked for new standard names, something like projection_x_angular_coordinate and projection_y_angular_coordinate. Thanks! I admit not checking what the canonical units were for these two standard names. How is this for the new standard name proposal: projection_x_angular_coordinate Canonical units: radian Definition: "x" indicates a vector component along the grid x-axis, when this is not true longitude, positive with increasing x. Angular projection coordinates are angular distances in the x- and y-directions on a plane onto which the surface of the Earth has been projected according to a map projection. The relationship between the angular projection coordinates and latitude and longitude is described by the grid_mapping. -Aleksandar
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