Re: [visad] Axis labels with Display side CoordinateSystem

Hi Stefan-

On 3/23/12 2:08 AM, Stefan Below wrote:
i am using the MapProjectionDisplay for playing around with Display side
CoordinateSystem. Everything is working fine, except that i have no idea
how i can display the coordinates of the (UTM) CoordinasSystem on the
X/Y axis. Is it somehow possible to add a mapping between the
Display.Latitude/Longitude and Display.XAxis/Yxis? (p.e.
(Latitude,Longitude) -> (Northing,Easting))

Julien Chastang of the IDV group is working on this now for the IDV. There is no simple way, especially when the projection is not rectillinear. Basically, you would have to compute the UTM values at lat/lon points along the x and y axes and then use a custom Hashtable for a mapping of X/Y value to Easting/Northing.

You might try adding a data reference with just a GriddedSet of the Northing/Easting values and then map Easting to Display.XAxis and Northing to Display.YAxis. I'm not sure it would work if you had the set with a CoordinateSystem of (Latitude,Longitude) -> (Northing, Easting) but if that's easier, you could give that a try.

Don
--
Don Murray
NOAA/ESRL/PSD and CIRES
303-497-3596
http://www.esrl.noaa.gov/psd/people/don.murray/