[GRASS-user] problem with r.surf.idw

[Alberto Pettazzi]

Dear all,

I want to interpolate a raster map that contains real values. I KNOW the 
values are real because I output the raster values with r.out.ascii 
command and the file shows real values.
The problem is when I interpolate the raster with the r.surf.idw 
function and output the interpolated raster value, the file only 
contains integer (probably truncated) values.
the command I type is :
r.surf.idw input=original_raster output=intepolated_raster --o
Obviously, typing a d.what.rast on the intepolated raster, I only see 
integer values (as in the ascii file generated).
So, why interpolating produces only integer values??
thank you in advance,
-- 

Alberto Pettazzi


MeteoGalicia - Departamento de Climatología y Observación

Consellería de Medio Ambiente e Desenvolvemento Sostible

Rúa de Roma, 6

15707 Santiago de Compostela. A Coruña


Teléfono: +34-881-999646


e-mail: alberto.pettazzi at meteogalicia.es 
<mailto:alberto.pettazzi at meteogalicia.es>