[GRASSLIST:718] Negative elevations

[Kurt Springs]

Hi folks,

As if you couldn't guess.   New question.

Some one opened one of the dxf files in ArcView.  It looked like it had
negative elevations.  When I ran v.surf.rst then v.color there was an
indication that some of my attributes were negative.  Is there a way to
correct this.  Maybe a way to add the the negative number making the
negatives zero?

Also is there a way to be sure the elevations are set to metres?

Kurt