[GRASS-user] Working with USA Public Land Survey System

[Hamish]

Henry House wrote:
> I have a set of surveyed-section boundaries* for northern California
> from the United States Public Land Survey System and would like to use
> GRASS to find geometric fractions of these roughly square sections.
> For example, I would like to divide a particular section into equal
> quarters by bisecting it east-west and north-south and then save the
> northwest quarter for further analysis. Can anyone suggest a method to
> do this acurately?
> 
> * Used for legal descriptions of parcels given in terms of townships and
>   ranges.

perhaps,

g.region vect=boundaries
v.mkgrid grid=2,2


or "g.region -p" then set "g.region n= e=" by hand and v.in.region?


?

Hamish