xiao wrote:
Can anyone give some link about the link projection in C? Thank you :)
I am trying to adjust the data in a map,
This is off-topic in this group, which is specifically about C
programming, and not about application packages available in C.
comp.infosystems.gis might be more appropriate.
I'm familiar with a several different map projection packages, in IDL,
perl, and in c, but but they all use GCTP
<ftp://edcftp.cr.usgs.gov/pub/software/gctpc/internally. That's
freeware put out by the US Geological Survey, so it combines a good
price with a reasonable amount of trustworthiness. There may be other
libraries out there that are better than GCTP, but I'm not familiar
with any others; comp.infosystems.gis might be a good place to look
for other recommendations.