Hello,
I'm trying to export a DEM created in GRASS to golden Software's Surfer (v.8),
but when I try to open it, Surfer gives "unable to read test.grd".
does anyone experienced something like this?
thanks
--
+-------------------------------------------------+
Carlos Henrique Grohmann - Guano
Geologist M.Sc - PhD Student at IGc-USP - Brazil
Linux User #89721 ICQ: 214752832
+-------------------------------------------------+
I'm trying to export a DEM created in GRASS to golden Software's
Surfer (v.8), but when I try to open it, Surfer gives "unable to read
test.grd".does anyone experienced something like this?
GRASS53> r.out.ascii -s in=topo out=topo.grd
Surfer 8.04:
File->New->Plot Doc
Map->Shaded Relief Map
Open->"topo.grd"
works for me..
Maybe try exporting the DEM as integers? (add the -i flag to r.out.ascii)
Let me know if that works ..
Hamish
Didn't work
I tried the -i -s flags, still get "unable to read", in Surfer.
Carlos
--
+-------------------------------------------------+
Carlos Henrique Grohmann - Guano
Geologist M.Sc - PhD Student at IGc-USP - Brazil
Linux User #89721 ICQ: 214752832
+-------------------------------------------------+
Citando Hamish <hamish_nospam@yahoo.com>:
> I'm trying to export a DEM created in GRASS to golden Software's
> Surfer (v.8), but when I try to open it, Surfer gives "unable to read
> test.grd".
>
> does anyone experienced something like this?GRASS53> r.out.ascii -s in=topo out=topo.grd
Surfer 8.04:
File->New->Plot Doc
Map->Shaded Relief Map
Open->"topo.grd"works for me..
Maybe try exporting the DEM as integers? (add the -i flag to r.out.ascii)
Let me know if that works ..
Hamish
> > I'm trying to export a DEM created in GRASS to golden Software's
> > Surfer (v.8), but when I try to open it, Surfer gives "unable to
> > read test.grd".
> > does anyone experienced something like this?
>
> GRASS53> r.out.ascii -s in=topo out=topo.grd
>
> Surfer 8.04:
> File->New->Plot Doc
> Map->Shaded Relief Map
> Open->"topo.grd"
>
> works for me..
> Maybe try exporting the DEM as integers? (add the -i flag to
> r.out.ascii)Didn't work
I tried the -i -s flags, still get "unable to read", in Surfer.
No idea. I just tried with a map with NULLs, that worked fine too.
Surfer can take a multitude of import formats, can you try exporting to
something else and loading that in?
Lat/lon location?
Francisco:
If I'm not wrong (it's a long time since the last time I used surfer)
you have to take into account that surfer data are point data not cell
data. So, the first X and last X in surfer header information are
refererd to the center of the cells in the resulting GRASS map so you
have to add and subs ewres/2 to the e and w parameters in the
cell_head file. The same for Y coordinate.
I think this is already taken care of, right clicking on the shaded
relief map and selecting Properties->Limit shows w-(ewres/2) etc.
Hamish