[GRASSLIST:1557] (no subject)

GRASS GRASS user
1

Probably
d.vect.cats help

may I intrude in the discussion?
Thanks Markus, I was also looking for this command. But I have a further question
concerning attributes in vectors... I want to export a vector to the DXF format
in order to get the attributes in AutoCad. However this works fine and without
a hitch with arcs.
But when converting a site file to a vector (in order to have the site attributes
in the vector layer), I saw that the attributes are missing. Although the DXF
file seems to contain the correct point information (introduced by a P, and
then followed by the corner coordinates of the point), there were no atrributes
associated with the points.

How can I translate a site file to a vector and the export it correctly to the
DXF format, without loosing the attributes?

Cheers
--
Bernhard Sturm
CDE, University of Berne - Switzerland

2

AFAIK, DXF format does not support attributes, only the objects' geometry.
(Truly, its 'blocks' have attributes, but I would not recommend you to use
it.)

When I need to import geodata in AutoCAD Map, usually I export to Shape
files, wich works fine.

(AutoCAD Map's DWG file format has an extension to store attributes (called
Object Data), but I don't know any non-Autodesk software that supports it -
not even FME from Safe Software.

Hope this helps.

Regards,
Felipe Nievinski.

----- Original Message -----
From: <sturm@datacomm.ch>
To: <grasslist@baylor.edu>
Cc: <neteler@geog.uni-hannover.de>
Sent: Monday, March 05, 2001 12:23 PM
Subject: [GRASSLIST:1557] (no subject)

>Probably
>d.vect.cats help

may I intrude in the discussion?
Thanks Markus, I was also looking for this command. But I have a further

question

concerning attributes in vectors... I want to export a vector to the DXF

format

in order to get the attributes in AutoCad. However this works fine and

without

a hitch with arcs.
But when converting a site file to a vector (in order to have the site

attributes

in the vector layer), I saw that the attributes are missing. Although the

DXF

file seems to contain the correct point information (introduced by a P,

and

then followed by the corner coordinates of the point), there were no

atrributes

associated with the points.

How can I translate a site file to a vector and the export it correctly to

the

DXF format, without loosing the attributes?

Cheers
--
Bernhard Sturm
CDE, University of Berne - Switzerland

3

At 15:18 07.03.01 -0300, Felipe G. Nievinski wrote:

AFAIK, DXF format does not support attributes, only the objects' geometry.
(Truly, its 'blocks' have attributes, but I would not recommend you to use
it.)

I've exported isolines to the dxf format, and they all contained two layers: the vector layer, and the attribute layer. I never had any problems using them, and they were all perfectly corresponding to the attributes assigned within GRASS... (I drew all my maps so far with this method, it's far more precise than using a CELL driver or a big X monitor, and resolution independent)
However this works only with arc vectors, and not with point data (GRASS wasn't even able to plot a converted site file with s.to.vect as a vector). I was wondering, whether someone else had ever used converted site data as a vector layer, and then exported it to another file format?

Any help is much apreciated

Bernhard Sturm
--
CDE, Centre for Development and Environment, University of Berne

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