[GRASS-user] v.lrs.create usage?

GRASS GRASS user
1

Hi,

is there anyone who successfully used v.lrs.create? I am apparently
lacking a hint to get it running. Currently it complains about
WARNUNG: start of 1. MP >= start of 2. MP for points' cats 31, 30

How to populate the tables correctly?

thanks
markus

------------------
ITC -> dall'1 marzo 2007 Fondazione Bruno Kessler
ITC -> since 1 March 2007 Fondazione Bruno Kessler
------------------

2

Hi Markus,
I'd like testing v.rls but I have not a good dataset to do that, if you
have a dataset to download I can use the same.

Thank you
Leonardo

Markus Neteler ha scritto:

Hi,

is there anyone who successfully used v.lrs.create? I am apparently
lacking a hint to get it running. Currently it complains about
WARNUNG: start of 1. MP >= start of 2. MP for points' cats 31, 30

How to populate the tables correctly?

thanks
markus

------------------
ITC -> dall'1 marzo 2007 Fondazione Bruno Kessler
ITC -> since 1 March 2007 Fondazione Bruno Kessler
------------------

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3

Hi Leonardo,

I have indicated our upcoming new dataset in a separate mail, but also
spearfish
should do. Just we need to figure out how... In Spearfish there is the
"roads_net"
map. Waypoints (bustops, incidents, whatever) can be digitized with v.digit.

To figure out the usage of v.lrs.create in principle a line with a few
points
along the line should do (they even don't have to be precisely on the line).

thanks!
Markus

Leonardo Lami wrote on 04/17/2007 12:37 PM:

Hi Markus,
I'd like testing v.rls but I have not a good dataset to do that, if you
have a dataset to download I can use the same.

Thank you
Leonardo

Markus Neteler ha scritto:
  

Hi,

is there anyone who successfully used v.lrs.create? I am apparently
lacking a hint to get it running. Currently it complains about
WARNUNG: start of 1. MP >= start of 2. MP for points' cats 31, 30

How to populate the tables correctly?

thanks
markus

------------------
ITC -> dall'1 marzo 2007 Fondazione Bruno Kessler
ITC -> since 1 March 2007 Fondazione Bruno Kessler
------------------

_______________________________________________
grassuser mailing list
grassuser@grass.itc.it
http://grass.itc.it/mailman/listinfo/grassuser

------------------
ITC -> dall'1 marzo 2007 Fondazione Bruno Kessler
ITC -> since 1 March 2007 Fondazione Bruno Kessler
------------------

4

On Tue, Apr 03, 2007 at 06:33:50PM +0200, Markus Neteler wrote:

Hi,

is there anyone who successfully used v.lrs.create? I am apparently
lacking a hint to get it running. Currently it complains about
WARNUNG: start of 1. MP >= start of 2. MP for points' cats 31, 30

How to populate the tables correctly?

After quite some debugging (luckily it's open source!) I
figured out the trick:

The start_mp/end_mp columns must be decimal (not integer as stated
in Radim's article which is probably slightly older than the implementation
in GRASS 6).

I have added a simple example to the manual page.
http://grass.itc.it/grass63/manuals/html63_user/v.lrs.create.html

You can try with a vector line and 3 points along this line (in
a separate map).

cheers
Markus

PS: Also updated related docs in 6.2-CVS