[webmap-discuss] Client side coordinate transformation library - Call to developers/testers

[Cameron Shorter]

Richard, Aaron,
You guys are both doing good stuff with regards to Javascript Projections.

I know that in the short term it is easier and faster to update your 
personal codebase rather than merge your codebase with another library.
However, in the long run the advantages of having twice the number of 
developers on the same codebase should outweigh the initial merging cost.

Your projects have the advantage that they are relatively young and the 
momentum required for a merge will be much less than will be required in 
a year or two.

Aaron,
Your licence is GPL?  Would you consider changing to LGPL?  Mapbuilder 
would have a problem incorporating your library because we are a LGPL 
library which means we wouldn't be able to use your codebase.

Richard Greenwood wrote:
> On 7/25/06, Aaron Koning <aaronkoning at gmail.com> wrote:
> 
>> Hi Richard,
>>
>> Its good to hear from you again. I am mostly interested in porting 
>> GCTP to
>> JavaScript. I have not had much use for datum conversions on the client
>> side, but I'd be interested to hear from anyone who has. Right now the
>> GCTP-JS port has the three most important projections for my region 
>> (Albers,
>> Lambert, UTM) and it works very well, so I am hesitant to get involved 
>> with
>> recreating this functionality. In addition, I believe that the GCTP 
>> can be
>> ported much quicker than Proj4 since it has less than half the files of
>> Proj4 and since many of the GCTP files contain only a few lines that 
>> need to
>> be converted. Perhaps there are more compelling reasons to redirect 
>> efforts?
>>
>> Aaron
> 
> 
> No, I have no terribly compelling arguments for combining the projects
> at this time, but let's keep in touch. The Mapbuilder Proj.js code
> does have the GCTP Polar Stereographic projection converted, which may
> be of interest to you.
> 
> Top of my projection list is the Mercator (not transverse Mercator)
> because it is used by Google and everybody is keen on Google. If you
> get to it before I do, would you drop me a line?
> 
> I trust that you would not mind if I incorporated projections that you
> have port into my work?
> 
> And do you know if GCTP is open source? I know Cameron Shorter was
> wondering about this recently.
> 
> Rich
> 


-- 
Cameron Shorter
http://cameron.shorter.net