[Qgis-user] problems reprojecting in equal earth

Nicolas Cadieux nicolas.cadieux at archeotec.ca
Wed Aug 21 10:17:06 PDT 2019


Hi,

These are the nasty polygons.  I am hoping you will see the image.

On 2019-08-19 12:26 p.m., Nicolas Cadieux wrote:
> Hi,
>
> Trying to help another Qgis user that posted earlier.
>
> We have Natural Earth vectorial Data that we what to reproject in 
> Equal Earth.  We want Austria to be in the middle of the map so we 
> created a Equal Earth Project using  custom CRS  using +proj=eqearth 
> +datum=WGS84 +wktext +lon_0=136 with the help of 
> https://proj.org/operations/projections/eqearth.html. Using lon_0=136 
> puts Australia in the middle and limits the distortion in that longitude.
>
> Data was reprojected and saved in the new projection (vector/Data 
> Management tools/Reproject Layer).  Project is also in the Equal Earth 
> projection so no reprojection on the fly is happening behind the scenes.
>
> Question: How so we take care of the nasty polygons that appear when 
> we add the "+lon_0=136" parameter?  See the zip.
>
> You can find the data here: 
> https://drive.google.com/open?id=1eL6ws8Jc-PugMM2gxV79j0k-TGoWcw6B
>
> Qgis 3.8.1 on Windows 10_64
>
> Thanks
>
> Nicolas
>
>
>
>
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