Hi All:
For the benefit of everybody, I have some news about this problem. Even though
ILWIS staff did not seem to care to much about it.
We have succeed in repairing the cadastral map! But it could not be done in
ILWIS, nor in AutoCAD, the solution came from Intergraph MGE, after applying
several spatial filters, we have as a result the clean (no duplicate lines, no
gaps between closed polygons, no micro areas) big map. It was great, because
we have not the time nor the money (no way!) to digitize more than 40000
parcels and more than 35000 buildings all over again.
Thanks to all of you who at least try to help with advices. Regards,
Reinaldo
"Jener F. L.de Moraes" wrote:
> Dear Reinaldo,
>
> If you have Autocad Map, try the function Drawing Cleanup in
> Menu/Map/Tools. It has a lot of options like: delete duplicate objects,
> erase short objects, break crossing objects, dissolve pseudo nodes,
> that could help you to solve your problem.
>
> Sincerely,
> Jener
>
> Reinaldo Paul Perez Machado wrote:
>
> > Hi all:
> >
> > Some days ago I have posted this message, and even sent it directly to
> > some of you. Till now, unfortunatelly I have not had any reply. Can you
> > please take a minute to write down your oppinion. Is this possible to
> > solve this situation with ILWIS or not. I would appreciate very much any
> > aid you can provide.
> >
> > Please, some help is required. We are trying to import a bunch of
> > polygons (parcel map) that was digitized in Microstation using
> > photogrametry. So the first step was convert them to AutoCAD DXF. Then
> > we imported into ILWIS, so far so good, they came in nicely, as
> > polygons, the only problem is that the digitizing was poorly done, so
> > the area is full of micro areas, duplicate lines, and closed polygons
> > separated by a gap of 15 to 30 cm even though they are closed, that is a
> > line that should be one, or at least two at the same exact position and
> > length. In reality they are two parallel boundary lines, separated just
> > a few centimeters. We converted the polygon map to segment, then applied
> > the tunneling with 1 m (more then enough), removing superfluous nodes,
> > the resulting map was not distorted, and even reduced a bit of size
> > (some nodes where removed), but the micro areas and the duplicated
> > parallel sides remain the same. Can you recommend something to solve
> > this problem? Trying to repair the polygon map manually is more costly
> > than doing the whole work again using correct digitizing techniques!
> >
> > Thanks, in advance, for your help. Best regards,
> >
> > Reinaldo
--
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
_/ Reinaldo Paul Perez Machado E-mail: [EMAIL PROTECTED] _/
_/ Professor _/
_/ Departamento de Geografia _/
_/ Faculdade de Filosofia Letras e Ciencias Humanas _/
_/ Universidade de Sao Paulo _/
_/ Sao Paulo - SP. BRASIL _/
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
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