ESRI Shape Output (v.out.shape) !

[David D Gray]

Rich Shepard wrote:
> 
> On Wed, 17 May 2000, David D Gray wrote:
> 
> > I was going to develop a filter for this transfer myself, but it is
> > possibly not a high prioirity, because if you need this function for
> > practical use, I would suggest to export a digital line graph with
> > v.out.dlg. This is *very* accurate - I have used it to transfer several
> > layers of a 6,500 sq.km. coverage from GRASS dig (in parts) to ArcView.
> > And ArcView (and most GIS) will easily import a DLG.
> 
> David,
> 
>   Doesn't it make sense to use the DLG format as a neutral intermediate? As
> I wrote yesterday (or whenever it was), this is well-documented, ASCII for
> readability and easy parsing, and acceptable by almost everyone's software.
> 
> Rich
> 
> Dr. Richard B. Shepard, President
> 
>                        Applied Ecosystem Services, Inc. (TM)
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Rich

It does make sense to use this, and in fact, as I have described, that
is exactly what I have done with huge amounts of data. I started to
develop the shapefile import stuff, however, because I couldn't
find a way to export DLG's from ArcView, and the other side of the coin
is that, some people may not have ArcView, less well endowed GIS maynot
so easily have the DLG support facilities that we can take for granted
with the `giants'.(As Alejandro has just pointed out) But surely all
the serious topological formats - DLG, dig, e00, SDTS even, are
much-of-a-muchness under the skin, I mean in terms of their data
structures and links. So I am not quite sure what you mean by using
specifically DLG as an import/export intermediate. Our intermediate
would just be an API consisting of raw structures in memory and the
routines to process them.

David

BTW. Did you get the E-mail I sent you about this?