Re: [GRASS-dev] About the vector changes

2009-08-08 Thread Markus Metz


Hamish:

[...] it would
be nice if v.info could work (even partially) for maps without topology
built. e.g. massive LIDAR datasets.
  

Try trunk r38644, new -l flag for v.info to open vector map on level 1.

Markus M
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Re: [GRASS-dev] About the vector changes

2009-08-07 Thread Markus Metz


Hamish wrote:

Glynn wrote:
  

Vector maps no longer work:

$ v.info fields
ERROR: Spatial index was written with LFS but this GRASS version does not
   support LFS. Try to rebuild topology or upgrade GRASS.




Hi,

I've got nothing to add about that; just while on the subject: it would
be nice if v.info could work (even partially) for maps without topology
built. e.g. massive LIDAR datasets.
  
It could be useful if more vector modules could support vectors without 
topology, most importantly all v.surf.* modules. Not a new idea, was 
mentioned earlier.


Markus M

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Re: [GRASS-dev] About the vector changes

2009-08-07 Thread Markus Metz


Hamish:

Hamish:
  

it would be nice if v.info could work (even partially) for maps
  

without topology built. e.g. massive LIDAR datasets.



MMetz:  
  
It could be useful if more vector modules could support vectors without 
topology, most importantly all v.surf.* modules. Not a new idea, was 
mentioned earlier.



AFAIK, they already do.
  

Oops, right.

Should v.info calculate bounding box and number of features for level 1? 
This can take some time because the whole coor file must be read, but I 
would find it useful to know the extends and number of points (, lines, 
boundaries, centroids) even for level 1. That helps setting the right 
region for the v.surf.* modules.


Markus

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Re: [GRASS-dev] About the vector changes

2009-08-07 Thread Markus Neteler
On Fri, Aug 7, 2009 at 10:41 AM, Markus Metz
markus.metz.gisw...@googlemail.com wrote:
...
 Should v.info calculate bounding box and number of features for level 1?
 This can take some time because the whole coor file must be read, but I
 would find it useful to know the extends and number of points (, lines,
 boundaries, centroids) even for level 1. That helps setting the right region
 for the v.surf.* modules.

While I also think that this would be important info to obtain, another
option could be to modify v.univar to also work with x, y [,z]. Then the
user wouldn't be surprised that it takes time... (v.info is moreover just
reading a map header in real time).

Markus
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Re: [GRASS-dev] About the vector changes

2009-08-06 Thread Hamish
Glynn wrote:
 Vector maps no longer work:
 
 $ v.info fields
 ERROR: Spatial index was written with LFS but this GRASS version does not
support LFS. Try to rebuild topology or upgrade GRASS.


Hi,

I've got nothing to add about that; just while on the subject: it would
be nice if v.info could work (even partially) for maps without topology
built. e.g. massive LIDAR datasets.


thanks,
Hamish



  

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