Re: Cartographic Projection Library

[John Cartwright <John.C.Cartwright@xxxxxxxx>]

Hello All,

I presume that the libproj that you're referring to is the proj4
library?  I think that it is actively supported, or at least is being
used by active projects - Mapserver, GDAL, GRASS, POSTGIS, etc.  Closest
thing I know of for a standard projection library  in the opensource GIS
world.

There's a mailing list at http://lists.maptools.org/mailman/listinfo/proj

-- john




John Caron wrote:
>
>
> James Gallagher wrote:
>>
>> On Aug 3, 2006, at 11:33 AM, Nathan Potter wrote:
>>
>>> I own the USGS "bible" on map projections. Not a library, but it 
>>> has all of the stuff from first principles. I have coded a few and 
>>> they work good.
>
> We have a library of java routines coded mostly from Snyder's book.
> Nathan, if you code something that we dont have, we probably want to
> add it.
>
>>
>>
>> Yes, I have that as well, and it was really simple to use it. But, 
>> what I would like is a general library of code that OPeNDAP can
>> adopt  so that we can do two things:
>>
>> 1. Not write (re)projection code ourselves; and
>> 2. Build up knowledge within the group so that we don't each spend 
>> time (re)learning the same stuff.
>>
>> This just seems like such a basic problem, it's hard to believe 
>> everyone codes these themselves.
>>
>> Maybe I just need to print the libproj docs and spend an evening
>> with  them.
>
> libproj I think is pretty standard for C libraries, but there may be
> some question about if anyone is supporting it.
>
> The CF standard refers to it, and points to docs at
>
> http://www.remotesensing.org/geotiff/proj_list/
>
>
>>
>> James
>>
>>>
>>> N
>>>
>>>
>>> On Aug 3, 2006, at 9:50 AM, James Gallagher wrote:
>>>
>>>> Hi all,
>>>>
>>>> I'm looking for a cartographic projection library. Any 
>>>> suggestions? I've looked at libproj, but it's not obvious how to 
>>>> get it to work with my application.
>>>>
>>>> Thanks,
>>>> James
>>>> -- 
>>>> James Gallagher                jgallagher at opendap.org
>>>> OPeNDAP, Inc                   406.723.8663
>>>>
>>>
>>> ========================================================
>>> Nathan Potter                        The OPeNDAP Project
>>> ndp@xxxxxxxxxxx                       http://opendap.org
>>> 541.752.1852 voice
>>>
>>>
>>>
>>
>> -- 
>> James Gallagher                jgallagher at opendap.org
>> OPeNDAP, Inc                   406.723.8663
>