[GRASS-user] (no subject)

GRASS GRASS user
1

Hello,

I am wondering how it is possible to create 2.5D NVIZ map from a 20m interval contour line shapefile that has the elevation information as an attribute.

I’m new to using GRASS for such things.

I’ll keep reading, but most of the information is about .dem files.

Thank you!

Amaginary Studios
amagine@telus.net
Phone 250 845 7999

Mars Sjoden
3320 Mount Davis Way
Houston BC
V0J 1Z2

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2

Amaginary Studios wrote:

I am wondering how it is possible to create 2.5D NVIZ map from a 20m
interval contour line shapefile that has the elevation information as
an attribute.

I'm new to using GRASS for such things.

I'll keep reading, but most of the information is about .dem files.

GRASS was historically mainly a raster based GIS, only with GRASS 6.0
did we gain a powerful vector engine. Thus many of the modules and
documentation deal with digital elevation models in gridded raster form.

Keeping in that tradition: convert your vector contour file to a raster
DEM:

g.region res=
v.to.rast use=attr column=elevation out=contour_map
r.surf.contour in=contour_map out=dem_map
nviz dem_map

see the individual help pages for more info.

Hamish