Re: examples of rotated pole and British National Grid data

Wright, Bruce wrote:
> John,
>
> I'm running the downloaded "toolsUI-2.2.20.jar" files from my Desktop -
> I could not get it to launch from WebStart (but this may be due to my
> ignorance of WebStart), so I don't have console output; so it's not
> clear what is happening when I try to save NetCDF - it just doesn't
> actually update the file.
>   
if you run from a command window, error output should be going to that. 
there were some errors in the ncml, so i suspect it was bombing when you 
tried to open it.
> I have no problem saving to NcML, so I've attached a manually updated
> NcML file, in the hope that you can use this - it corresponds to the
> NetCDF file of the same name (which I sent previously). I've tried to
> make the metadata as standard as possible, but I noted that in the
> example in the CF Conventions documentation, the file had two further
> 2-d arrays for latititude and longitude of the rotated pole grid-points
> (i.e. and explicit mapping); these are not present in the files, as they
> were not in the source FieldsFiles - I don't know if this will cause you
> problems. 
>   
we dont use the 2D lat/lon arrays (unless we have to), so leaving them 
out is good.
> Let me know if this is any use.
>
> I don't have any references for rotated pole - it's not really a
> specific projection, just a rotation of the normal lat-long coordinates
> to put the middle of the grid being used on the equator to get the
> grid-spacing as even as possible.
>   
im having some trouble with the transformation, i will have talk to the 
person who wrote it.

however, to figure out whats wrong, it would be good to know what is 
"truth". Can you send me what you expect is the correct (non-rotated)  
lat/lon values? Any point would be fine, perhaps the 4 corners if thats 
easy.