Frank Broniewski wrote: > thanks for your response. So it's only a matter of string/number > formatting with r.info? Yes. > r.surf.contour uses floating point only in the latest version of GRASS, > doesn't it? Yes. 6.4.0 uses CELL, 6.4.1 uses DCELL. -- Glynn Clements <glynn at gclements.plus.com>