[GRASSLIST:1762] ascii data import

[Brent Wood]

As a new GRASS user, I'm trying to get some of my data into GRASS so I can
use it. 

The documentation I have describes the commands to use, but not the file
formats I need to use for the commands to work.

Typically I have three data formats, each line of which is as below:

 X Y     ascii trackline data (longitude/latitude) defining a polyline
         feature

 X Y X Y data defining the start & end points of simple line features
 
 X Y Z   data defining points with a location and value, such as altitude
         or temperature


 I can reformat these as required, if I knew what formats are required.

 Can someone please suggest an approach to getting such files into GRASS
datasets?




Thanks,

Brent Wood