Re: [Geotools-devel] fun with epsg-hsql

[Jody G. <jga...@re...>]

Jody Garnett wrote:
> So I am back to trying out epsg-hsql with udig.
>
> Last time I tried I was able to see the epsg authority but unable to 
> retrieve a list of known codes. This time I am getting a very deep stack 
> trace with way more classloader fun than I am used to debugging.
>
> This email is a starting place; I will comment as I learn more. Martin I 
> assume nothing has changed on your end?
>   
Hi Martin - first some good news.

The big problem last time I tried to use epsg-hsql was obtaining a list 
of all valid codes - this now works :-) When I type 4326 into the search 
field I get two things listed:
- UNNAMED:4326
- EPSG:$326

Perhaps this is indicative of a problem we can test for?

However as the attached screen snap shows things are far from perfect. 
If I arrange for my map projection
to match the data projection everything is fine; the following was taken 
based on a transformation from
> GEOGCS["GCS_WGS_1984",
>   DATUM["D_WGS_1984",
>     SPHEROID["WGS_1984", 6378137.0, 298.257223563]],
>   PRIMEM["Greenwich", 0.0],
>   UNIT["degree", 0.017453292519943295],
>   AXIS["Longitude", EAST],
>   AXIS["Latitude", NORTH]]
To:
> GEOGCS["WGS 84",
>   DATUM["World Geodetic System 1984",
>     SPHEROID["WGS 84", 6378137.0, 298.257223563, 
> AUTHORITY["EPSG","7030"]],
>     AUTHORITY["EPSG","6326"]],
>   PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]],
>   UNIT["degree", 0.017453292519943295],
>   AXIS["Geodetic latitude", NORTH],
>   AXIS["Geodetic longitude", EAST],
>   AUTHORITY["EPSG","4326"]]