[GRASSLIST:7548] Re: vectorisation - vertex limit?

Markus Neteler neteler at itc.it
Thu Jul 14 10:22:23 EDT 2005


Hi Martin,

> The Problem is the vectorisation with r.to.vect: The resulting vector (lines) I
> get is not "finished" when displaying it (bottom part is missing). Further
> analysis are not possible with this vector - always getting the error:
> ERROR: Cannot open old vector mwin_vector1 at schlesi on level 2.

No, there is no such limit in the vector model. I just tried
to split the Spearfish roads map into 1m segments:

GRASS 6.1.cvs (spearfish60): > v.split in=roads out=roads_split length=1
 100%
Erzeuge Topologie ...
392579 primitives registriert
Building areas:  100%
0 Flächen erstellt
0 Inselflächen erstellt
Füge Inselflächen hinzu:
Füge Zentroide hinzu: 100%
Die Topologie wurde erstellt.
Anzahl von Knoten     :   392430
Anzahl von Primitives :   392579
Anzahl von Punkten    :   0
Anzahl von Linien     :   392579
Anzahl von Boundaries :   0
Anzahl von Zentroiden :   0
Anzahl von Flächen    :   0
Anzahl von Inseln     :   0

No problem (not even slow :-).

Probably your disk is full and GRASS doesn't report this properly?

Please post the full ourput of r.to.vect to better understand
the problem.

Markus




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