v.in.dxf3d <contrib>  GRASS Reference Manual <contrib> v.in.dxf3d



NAME
     Iv.in.dxf3dR - Converts the Z values of DXF files to
     attribute GRASS vector file format.
     (GRASS Vector Program)

SYNOPSIS
     Bv.in.dxf3dR
     Bv.in.dxf3d helpR
     v.in.dxf3d dxf=name [lines=name[,name,...]]

DESCRIPTION
     The v.in.dxf3d data conversion program generates GRASS
     dig_att files from a DXF file with Z values.

     This program, in conjunction with v.in.dxf, is ideal for
     automaticaly importing, to GRASS vector file, layers with Z
     values (isolines and level contours) from DXF format files.

     Firts should be run the v.in.dxf program for import the DXF
     polylines to binary GRASS vector file format (dig). Later,
     the DXF Z values of the isolines layers with v.in.dxf3d
     (dig_att) must be imported, and finally run v.support to
     attach at this layers their elevations.  The v.in.dxf3d.sh
     script can be used to make all this automaticaly, for a
     maximun of two isolines layers (normally contours and master
     contours) from one DXF file.

     The v.in.dxf program only recognizes, by now, the Z values
     from polylines entities in the DXF format.


COMMAND LINE OPTIONS
     Parameters

     dxf  Name of the DXF input design file from where will be
	  extracted the Z values.

     lines
	  Name(s) of layer(s) in DXF input file containing
	  isoline data with Z values, and the name(s) to be
	  assigned to the GRASS vector data (dig_att) files
	  output.


BUGS
     The program only recognizes the Z values if they are in the
     "30" field of the POLYLINE entity section.

     If the input DXF file is in MS-DOS text format, with CR/LF
     instead of Unix LF, the program doesn't run. To avoid this
     problem, import to Unix your DXF-MSDOS format files with FTP
     in ascii mode or with a command able to convert this files



GRASS 5.0beta7	      GRASS Development Team			1






v.in.dxf3d <contrib>  GRASS Reference Manual <contrib> v.in.dxf3d



     (DOS-COPY, mcopy, etc).


SEE ALSO
     v.in.dxf, v.support, v.digit, v.in.dxf3d.sh


AUTHOR
     The original program dxf3d2gras.bas written in GWBASIC (MS-
     DOS) by Evaristo Quiroga, Hidrologic and Extern Geodinamic
     Unity of the University Autonoma of Barcelona (6/93).

     The program was rewritted in C for Grass-Unix environment by
     Evaristo Quiroga, Environmental and Territorial Analisis
     Center, UAB (12/95).

NOTICE
     This program is part of the contrib section of the GRASS
     distribution.  As such, it is externally contributed code
     that has not been examined or tested by the Office of GRASS
     Integration.


































2		      GRASS Development Team	   GRASS 5.0beta7