Help with v.import

[M.R. Lassche]

Sharyl Walker wrote

> 	I want to take an ascii file of x,y coordinates
> (in UTMs) which define the boundary of an area and create
> a GRASS4.1 map.  The original ascii file has no headers --
> just the x,y coordinates (x and y separated by spaces, 1 coordinate
> pair per line).
> 
> 	What I've tried so far is the following:
> 		1) Edit the original ascii file to look like
> 		   an ascii arc file according to the example
> 		   in the Programmer's Manual.  That is, I 
> 		   added header information, put in arc type
> 		   and no. of coordinate pairs, and switched
> 		   the values to y,x format.  I stored this
> 		   modified file under the dig_ascii subdirectory
> 		   of my mapset.
> 		  
> 		2) Next, I ran v.import using option 3 to
> 		   convert an ascii vector file to GRASS vector 
> 		   format.  This seems to run OK, but when I
> 		   try to display the map, I get nothing.
> 
> 	Am I missing some important steps?  Is there an easier
> way to convert a straight ascii file to something GRASS can use?
> 
> 	Thanks for any advice.
> 
> 
> 
> Sharyl Walker
> Dept. of Agricultural Engineering
> University of Illinois
> guernsey at holstein.age.uiuc.edu
> 
> 
We had the same kind of troubles here and the problem seems to be that you have to switch your coordinates. Or just to find out if that is working first change your region by switching the northing and the easting

***********************************************
*             Ronnie Lassche                  *
*       Department of earth sciences          *
*              Free University                *
*                 Amsterdam                   *
*               lasm at geo.vu.nl                *
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