[GRASSLIST:1839] GRASS 5 display questions

  I have a vector layer that is imperfectly imported from MapInfo
(v.in.mif). When I try to interactively zoom in (d.zoom), I get an error box
at the bottom telling me that the north value must be greater than the south
value. (Sarcastic comment not provided; the computer wouldn't understand it
anyway.) But, if I select a larger area, it works.

  Also, if I select a medium-size area, I don't see what I outlined, but an
open multiple-line figure. I've no idea from where this comes.

  Any ideas what might be going on here?

Rich

Dr. Richard B. Shepard, President

                       Applied Ecosystem Services, Inc. (TM)
            2404 SW 22nd Street | Troutdale, OR 97060-1247 | U.S.A.
+ 1 503-667-4517 (voice) | + 1 503-667-8863 (fax) | rshepard@appl-ecosys.com

only an idea...

I'm working a lot with ArcView, there are sometimes strange problems when the
nodes are not snapped, seems, you should check that (eventually in MapInfo).
Even duplicated lines result in pretty obscure behavior.

Try v.digit on your data, that might help.
I don't think, thats only a display problem.

Hope it helps.
Dieter

On 14-May-01 Rich Shepard wrote:

  I have a vector layer that is imperfectly imported from MapInfo
(v.in.mif). When I try to interactively zoom in (d.zoom), I get an error box
at the bottom telling me that the north value must be greater than the south
value. (Sarcastic comment not provided; the computer wouldn't understand it
anyway.) But, if I select a larger area, it works.

  Also, if I select a medium-size area, I don't see what I outlined, but an
open multiple-line figure. I've no idea from where this comes.

  Any ideas what might be going on here?

Rich

Dr. Richard B. Shepard, President

                       Applied Ecosystem Services, Inc. (TM)
            2404 SW 22nd Street | Troutdale, OR 97060-1247 | U.S.A.
+ 1 503-667-4517 (voice) | + 1 503-667-8863 (fax) | rshepard@appl-ecosys.com

----------------------------------
Dieter Lehmann
University of applied Sciences
Schelmenwasen 4-8
D-72622 Nuertingen, Germany
lehmann@fh-nuertingen.de
Phone: +49 (0) 7022 404 Ext. 207
Fax: +49 (0) 7022 404 Ext. 209

Date: Mon, 15-May-01 12:00:00 +0000 (GMT)
Time: 14:51:24

----------------------------------

On Tue, May 15, 2001 at 02:58:06PM +0200, Dieter Lehmann wrote:

only an idea...

I'm working a lot with ArcView, there are sometimes strange problems when the
nodes are not snapped, seems, you should check that (eventually in MapInfo).
Even duplicated lines result in pretty obscure behavior.

Try v.digit on your data, that might help.
I don't think, thats only a display problem.

Rich,

yes, Dieter's idea to use v.digit may be a solution:
- check map scale (shouldn't be 1:0 of course)
- check the boundary coordinates in that sheet (N,S,E,W)

Then, after leaving v.digit, the new vector header is saved.

Hope this helps,

Markus

On 14-May-01 Rich Shepard wrote:
> I have a vector layer that is imperfectly imported from MapInfo
> (v.in.mif). When I try to interactively zoom in (d.zoom), I get an error box
> at the bottom telling me that the north value must be greater than the south
> value. (Sarcastic comment not provided; the computer wouldn't understand it
> anyway.) But, if I select a larger area, it works.
>
> Also, if I select a medium-size area, I don't see what I outlined, but an
> open multiple-line figure. I've no idea from where this comes.
>
> Any ideas what might be going on here?
>
> Rich
>
> Dr. Richard B. Shepard, President
>
> Applied Ecosystem Services, Inc. (TM)
> 2404 SW 22nd Street | Troutdale, OR 97060-1247 | U.S.A.
> + 1 503-667-4517 (voice) | + 1 503-667-8863 (fax) | rshepard@appl-ecosys.com

----------------------------------
Dieter Lehmann
University of applied Sciences
Schelmenwasen 4-8
D-72622 Nuertingen, Germany
lehmann@fh-nuertingen.de
Phone: +49 (0) 7022 404 Ext. 207
Fax: +49 (0) 7022 404 Ext. 209

Date: 15-May-01
Time: 14:51:24

----------------------------------

--
Markus Neteler * University of Hannover
Institute of Physical Geography and Landscape Ecology
Schneiderberg 50 * D-30167 Hannover * Germany
Tel: ++49-(0)511-762-4494 Fax: -3984

On Tue, 15 May 2001, Markus Neteler wrote:

yes, Dieter's idea to use v.digit may be a solution:
- check map scale (shouldn't be 1:0 of course)
- check the boundary coordinates in that sheet (N,S,E,W)

  The problem was caused by a corrupted installation of GRASS. How this
happened I've no idea. But, I grabbed last Tuesday's weekly snapshot from
the CVS repository, built it and installed it over the earlier beta-11.2.
Now imports work better and the display behaves.

  Rather strange and unexpected for a linux system, but, what the heck it's
solved.

Rich

Dr. Richard B. Shepard, President

                       Applied Ecosystem Services, Inc. (TM)
            2404 SW 22nd Street | Troutdale, OR 97060-1247 | U.S.A.
+ 1 503-667-4517 (voice) | + 1 503-667-8863 (fax) | rshepard@appl-ecosys.com