Hi,
Not sure what you are trying to do.
-If you are looking to extract contour lines from a DEM, use
(Raster/Extract/contour) or Processing/Grass r.contour.step (with more
options.)
-If you want to extract a terrain profile from a DEM, use Profile tool
plugin.
-If you want to extract a terrain profile from a vector file (containing
contour line), I believe the VoGis-ProfilTool Plugin, will do that (but
never used it). If that does not work, make a DEM with these contour
lines using the Interpolation Plugin then use the Profile tool plugin.
To install plugins: Plugins/Manage and install plugins/All or not installed.
Good luck
Nicolas
Le 2015-03-18 10:11, Shetie Gatew [via OSGeo.org] a écrit :
> Dear all,
> Is there any one who has used 3D analyst to extract topographic
> profile with line extrapolation using QGIS? would you please share me
> how I do it with QGIS. There is in ArcGIS. I saw in in some tutorial
> from you tube
> Best regards,
> Shetie Gatew Mitiku (PhD student)
> Department of Biology
> Arba Minch University
> [hidden email]
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> +251-913-070305
> Ethiopia
> Earth and Environmental Science
> Katholic University of Leuven
> Belgium
>
>
>
>
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