[GRASS-user] Conflatio using GRASS

GRASS GRASS user
1

Dear List,
Can someone please advise me on how to perform conflation in GRASS - I
have various roads datasets that I would want to merge into a single
road dataset. If documentation is available it will be greately
appreciated.

--
Sent from my mobile device

Sindile Bidla

2

On 16/03/09 11:48, Intengu Technologies wrote:

Dear List,
Can someone please advise me on how to perform conflation in GRASS - I
have various roads datasets that I would want to merge into a single
road dataset. If documentation is available it will be greately
appreciated.

v.patch ?

Moritz

3

Will look into it.

2009/3/16 Moritz Lennert <mlennert@club.worldonline.be>

On 16/03/09 11:48, Intengu Technologies wrote:

Dear List,
Can someone please advise me on how to perform conflation in GRASS - I
have various roads datasets that I would want to merge into a single
road dataset. If documentation is available it will be greately
appreciated.

v.patch ?

Moritz

–
Sindile Bidla

4

On Mon, Mar 16, 2009 at 12:04 PM, Moritz Lennert
<mlennert@club.worldonline.be> wrote:

On 16/03/09 11:48, Intengu Technologies wrote:

Dear List,
Can someone please advise me on how to perform conflation in GRASS - I
have various roads datasets that I would want to merge into a single
road dataset. If documentation is available it will be greately
appreciated.

v.patch ?

I think they mean something this:
http://www.directionsmag.com/images/newsletter/2006/09_28/conflate_1_sm.jpg

which requires line snapping in an advanced way.

Markus

5

Markus, that is what I would want to do, any further pointers.

On 3/16/09, Markus Neteler <neteler@osgeo.org> wrote:

On Mon, Mar 16, 2009 at 12:04 PM, Moritz Lennert
<mlennert@club.worldonline.be> wrote:

On 16/03/09 11:48, Intengu Technologies wrote:

Dear List,
Can someone please advise me on how to perform conflation in GRASS - I
have various roads datasets that I would want to merge into a single
road dataset. If documentation is available it will be greately
appreciated.

v.patch ?

I think they mean something this:
http://www.directionsmag.com/images/newsletter/2006/09_28/conflate_1_sm.jpg

which requires line snapping in an advanced way.

Markus

--
Sent from my mobile device

Sindile Bidla

6

On Mon, Mar 16, 2009 at 6:09 PM, Intengu Technologies
<sindile.bidla@gmail.com> wrote:

Markus, that is what I would want to do, any further pointers.

There is a bunch of literature available, e.g.
http://www.isi.edu/integration/papers/chen03-ng2i.pdf

A software which does this kind of job is:
http://www.vividsolutions.com/JCS/

http://www.vividsolutions.com/JCS/features.htm#roadNetworkMatch
http://www.vividsolutions.com/JCS/images/Road Network Matching.gif

It would be cool to have it in GRASS, too (maybe Google Summer
of code?
http://grass.osgeo.org/wiki/GRASS_SoC_Ideas_2009
)

Markus