[ gpsdrive ] sourceforge [was: Ubuntu svn dependencies]

[Hamish]

Doug Robinson wrote:
> >  I am doing the same for Lake Ontario, when I get time to work on it.
> > Would be nice to catalog the results along with anyone else who has
> > an area of interest that they have converted.  (Of course the
> > real answer is to enable the reading of the ENC format directly,
> > since that is now the world standard for navigation).
> > fdr
> > Nemesis US20837
>
Chris H: 
> Had an offline discussion with Hamish about the status of linux ENC
> support, gdal and linux in general. Its not quite done yet. Doable,
> but somebody needs to be dedicated to the task and generally things
> like this get done when there is a paying customer involved.

or a good C programmer who is interested an has the time.

Perhaps it is time for an ENC update- Sylvain continues his work on
libS52 when he can find the time. new CVS commits in the last few weeks:
  http://openev.cvs.sourceforge.net/openev/contrib/S52/
I would say the core of it is fairly complete, mainly integration awaits.

S-52 specifies the colors and symbology with which to draw the ENC vector
data stored in the S-57 format. S-57 is already fairly well supported by GDAL/OGR's S-57 driver.

so:
- libgdal to access S-57 vector data
- libS52 to choose which layers to draw, symbology, colors, etc/
- there are a few rendering options also in libS52.

ISTR there is already one GPS navigation software for MS-Windows using
libS52, with little feedback. libS52 being GPL'd .... hmmm.
(GDAL/OGR is MIT-X'd) 


here is my wiki page on all this:
  http://grass.osgeo.org/wiki/S-57_data


Currently you can use libS52 as a plugin with the OpenEV viewer (a bit
like QGIS) so when you load S-57 data they are automatically drawn correctly.


Hamish