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Hi, I'd like to add support for dimensionless vertical coordinates in ncWMS and I have a few questions: 1. How common is it for the transformation between dimensionless coords and natural coords to be time-dependent? Under what circumstances would this occur? Does it happen when the coordinate depends on a pressure field that varies with time? 2. If the VerticalTransform exists, can I assume that getCoordinateArray() will always return a valid array, i.e. that nj4 has automatically found all the auxiliary fields necessary to create the transform (such as pressure)? 3. I can see how to get the units of the transformed vertical coordinate (i.e. the "natural" coords, via VerticalTransform.getUnitString()) but how can I get the "positive" direction? In other words, if the natural coordinates are in metres, how do I know whether this is depth or height? 4. What would be the most "natural" interpolation method in the vertical when transforming a gridded field from dimensionless coordinates into levels - nearest-neighbour or linear? (Or something else?) Thanks, Jon -- Dr Jon Blower Technical Director, Reading e-Science Centre Environmental Systems Science Centre University of Reading, UK Tel: +44 (0)118 378 5213 http://www.resc.reading.ac.uk<http://www.resc.reading.ac.uk/>
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