Hi, thanks for your solutions in fact. I have edited the 10m contour
lines and I just want to make contour isolines to 5m from the 10m
shapefile (vectors) without using any intermediar DEM or TIN. Maybe
Grass has a such function to interpolate vectors not only rasters?
For now, we take the decision to to calculate 5 meter contour lines and
to merge only the new curves and editing the bad ones in the flat zone.
thx for trying to help me,
Enzopolo
On 13/06/2011 16:18, Saber Razmjooei wrote:
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
<[email protected]> 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<[email protected]>
> 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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--
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Oriondata Ltda.
http://www.oriondata.cl
Fono: +56 (2) 235 64 44 / Fax: +56 (2) 264 18 24
Cel: +56 (9) 872 34 625
Antonio Bellet 77, Of. 1002, Providencia, Chile
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