Jody Garnett ha scritto:
> Andrea Aime wrote:
>> Hi,
>> I was investigating the possibility of comparing a random
>> WKT file found along with a shapefile or grid coverage
>> against the EPSG database to find out the equivalent
>> EPSG code.
>>
>> ....
>>
>> I could code a special comparator for each kind of CRS (projected, 
>> geographic and the like) but was wondering if there is a better way,
>> and if I'm making some mistake in assuming the more lenient method
>> is a good one.
>>   
> This sounds similar to the work Martin wanted to do for epsg-hsql. My 
> impression that using HSQL is the better way, as you can specifically 
> query the
> various parameters using SQL (rather then making several "equalish" 
> methods).

Well, the latter is more work, and I'm trying to get a short term
solution. Having query method is nice, but in order to make things
work in the forecoming chained authority we would need each authority
to implement these query mechanisms, which in some (file based) 
authorities would become equality checks anyways, so why not start with
them :-)

Cheers
Andrea

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