Hy Frank,
I did not set the region as the raster but the region was "correct." However now I have done so and I'll do another test (I'll tell you if it worked).
PS: The raster with 1,2 .. 9-10 digits are imported correctly....but 13 digits no 
Thank you
Gabriele
Gabriele,
I did some investigations using r.out.arc some time ago. There were
differences between the rasters, but after I set the region the raster
values were exactly the same. Have you set the region with g.region
rast=<raster>?Bye Frank
On Sat, Dec 4, 2010 at 3:58 AM, Gabriele N.<gis.gn@libero.it> wrote:
> >
> > Hi.
> > I am working with colleagues that working on ArcGIS. It 's okay but now I
> > have a problem with esri grid.
> > I am using to export from GRASS r.out.arc, but the values of the cells in
> > arcgis are different from what I read in GRASS.
> > The raster has values with 13 digits.
> >
> > Here's how I export:
> > r.out.arc input=map output=map13.asc dp=13
> >
> > I tried to import into ArcGIS as integer or as a float (ArcMap -> Toolbox ->
> > Conversion Tools -> To Raster -> ASCII to Raster ).
> >
> > Help / advice?
> >
> > Thanks
> >
> > Gabriele
> > --