<div dir="ltr">Thanks Helli and Moritz for help :)<div><br></div><div>[...]<div class="gmail_extra"><div class="gmail_quote"><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
I can confirm the issue when using v.in.ogr + v.proj, when using the file to define the location:<br>
<br>
grass73 -c /data/GEODATA/OSM/coastlines-generalized-3857/coastlines_z8.shp /data/GRASS/DATA7/test_3857/<br>
v.in.ogr /data/GEODATA/OSM/coastlines-generalized-3857/coastlines_z8.shp<br>
<br>
and then in the EPSG 3035 location:<br>
<br>
v.proj location=test_3857 mapset=PERMANENT input=coastlines_z8<br>
Reprojecting primitives ...<br>
ATTENTION: pj_transform() a échoué: failed to load datum shift file<br>
ERREUR :Unable to re-project vector map <coastlines_z8@PERMANENT> from<br>
<test_3857><br>
<br>
<br>
However, when I create the 3857 location using the EPSG code, it works:<br>
<br>
grass73 -c epsg:3857 /data/GRASS/DATA7/test_3857_epsg/<br>
[...]<br>
v.proj location=test_3857_epsg mapset=PERMANENT input=coastlines_z8<br>
<br>
success.<br></blockquote><div><br></div><div>yeah, I just tested here with the same result... so, creating the 3857 location with the coastlines .shp file then produces the error when reprojecting to 3035 because of this extra "nadgrids: @null" in the .prj... good to know :)</div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">There is a difference in the projection definition between the two:<br>
<br>
diff -u test_3857/PERMANENT/PROJ_INFO test_3857_epsg/PERMANENT/PROJ_INFO<br>
--- test_3857/PERMANENT/PROJ_INFO 2016-08-02 18:24:25.965809631 +0200<br>
+++ test_3857_epsg/PERMANENT/PROJ_INFO 2016-08-02 18:28:18.427085934 +0200<br>
@@ -7,7 +7,5 @@<br>
x_0: 0.0<br>
y_0: 0<br>
k: 1.0<br>
-nadgrids: @null<br>
wktext: defined<br>
no_defs: defined<br>
-over: defined<br>
<br>
Erasing the 'nadgrids: @null' from the first allows to reproject.<br>
<br>
The .prj file of the original shapefile contains:<br>
<br>
EXTENSION["PROJ4","+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over"]<br>
<br>
I guess the issue comes from how this is handled...<br></blockquote><div><br></div><div>It seems so... Thank you very much to both for your time!!!</div><div><br></div><div>Vero</div></div><br></div></div></div>