[Qgis-user] Interpolation of contour lines

[Saber Razmjooei]

> Actually not so much "converting" as it would be "adding" based on
> existing 10m.
By "converting" I meant "interpolate"...(OP:and I would like to
interpolate each 5 meters)

> Could choose to merge the '5m buffered lines' afterwards, or not.
> 
> Of course if there is a DEM with 5m resolution or better,
You can create contours with 5 m intervals from a 50 m resolution DEM.



>  it would be 
> more accurate to use the Contour.plugin (need matplotlib installed) or
> GRASS.
> 
> Just depends on what data is available and use case.

Cheers
Saber

> 
> 
> 
> On Mon, Jun 13, 2011 at 11:50 AM, Saber Razmjooei
> <razmjooeis at faunalia.co.uk> wrote:
>         I guess Mars meant converting a contour lines of 10 metre
>         intervals to 5
>         metre.
>         Best to do it using GRASS (plugin). Here is a nice Wiki page:
>         http://grass.osgeo.org/wiki/Contour_lines_to_DEM
>         
>         Once you have it as DEM (i.e. raster) you can use r.contour in
>         GRASS or
>         Contour tool under GDAL in QGIS (Raster > Contour) to convert
>         it to 5
>         metre contour vector.
>         
>         Saber
>         
>         
>         
>         
>         
>         
>         On Mon, 2011-06-13 at 11:31 -0700, Mars Sjoden wrote:
>         > Why not buffer a left or right side of your contour line @
>         5m?
>         >
>         > I presume your contour lines are vector polylines.
>         >
>         > Unless you mean to interpolate from an existing DEM?
>         >
>         > mars
>         >
>         > 2011/6/13 Vincent Blanqué <vblanque at oriondata.cl>
>         >         Hi,
>         >
>         >         I have contour lines each 10 meters and I would like
>         to
>         >         interpolate each 5 meters. Is there any Qgis
>         functionality to
>         >         generate these? Any plugin? Or is it possible with
>         ogr2ogr?
>         >
>         >         thx,
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