[OSM-talk-be] URBis, Open!

[A.Pirard.Papou]

 On 2013-04-26 11:20,  Chris Browet wrote :
> The Lambert72 PROJ4 string extracted from the prj is:
>
> +proj=lcc +lat_1=49.8333339 +lat_2=51.16666723333333 +lat_0=90
> +lon_0=4.367486666666666 +x_0=150000.01256 +y_0=5400088.4378
> +ellps=intl +units=m +no_defs
>
> And doesn't quite work.
>
> This one is ok:
>
> +proj=lcc +lat_1=51.16666723333334 +lat_2=49.83333389999999 +lat_0=90
> +lon_0=4.367486666666666 +x_0=150000.013 +y_0=5400088.438 +ellps=intl
> +towgs84=-99.1,53.3,-112.5,0.419,-0.83,1.885,-1.0 +units=m +no_defs
There are 4 or 5 proj4 definitions of Lambert 72 around and bugs reports.
This is the correct one, I think, that I configured Merkaartor with
after much searching.

Obviously, IGN/NGI should specify their projections' proj4 definitions
on their site.
Someone should notify them.

Cheers

André.


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk-be/attachments/20130427/448a59b6/attachment.htm>