[gdal-dev] Re: can ogr2ogr split polygons that cross 180 degree longitude

[Hermann Peifer]

Eric,

I can't help much apart from confirming that the same happened to me 
when trying to reproject Russia from LAEA to WGS84.

My "solution" was to ask a colleague, who is using ESRI products to do 
me a favour... :-(

Hermann


Eric Muller wrote:
> I am trying to reproject  shapefiles that represent Russia (from 
> http://wagda.lib.washington.edu/DATA/geography/world/russia/download.html) 
> from the original:
> 
>     The map is Albers equal-area projection Clarke spheroid of1866 with
>     the first standard parallel 46 00 0.000, the second standard
>     parallel 73 00 0.000, the central meridian 84 00 0.000. The latitude
>     of the projection's origin is 60 00 0.000.  Units -- meters.
> 
> to lat/long WGS84. I use the following command:
> 
> ogr2ogr \
>     -s_srs '+proj=aea +ellps=clrk66 +lat_1=46.0 +lat_2=73.0 +lat_0=60.0 
> +lon_0=84.0 +units=m +no_defs' \
>     -t_srs '+proj=latlong +ellps=WGS84 +datum=WGS84 +no_defs' \
>     rs_polbnda_${f}.shp rus${f}.shp
> 
> I would like polygons that cross the 180 degree longitude to be split. 
> It there a way to ask ogr2ogr to do that? What is the recommended way to 
> do it, if not?
> 
> Thanks,
> Eric.
> 
> 
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