[GRASSLIST:10525] Re: Problem using v.surf.rst

[Maciek Sieczka]

On Wed, 22 Feb 2006 13:24:43 +0000
Luca Casagrande <luca.casagrande at gmail.com> wrote:

> Hi guys!
> I got a SHP 3d with countour line at 25m and using this,i had to
> create a dem; I imported the shp using v.in.ogr and enabling the flag
> for 3d shp and this is the v.info output:
> 
> [..]      
> Map Scale:
> 1:1 Map format:
> native 
> Type of Map:  Vector (level:
> 2) Number of points:       	0               Number of
> areas:      0 Number of lines:        		2918
> Number of islands:    0 Number of boundaries:   	0
> Number of faces:      0 Number of centroids:    	0
> Number of kernels:    0 Map is 3D:
> 1 Number of dblinks:      	1      
> [..]
> 
> The associated table got element like those one:
> 
> id | cat | id | igds_layer | eq_lvls | altitude 
> 1	1    0		....		5	  100m
> (the value of the cl)
> 
> Doing a query on the vector map i noticed this anywhere:
> 
> map: 'cdl25m'
> mapset: 'PERMANENT'
> feature type: Line
> length: 4008.907401
> Line height: 0.000000   <== Is this ok with 3d file?

Maybe it is 3D but all the objects have 0 elevation?... Can you
verify that the z coordinate of your shapefile is other than 0 in some
other program? Then we could blame Grass (or OGR).

Maciek

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